Britain's Catherine, Duchess of Cambridge, with Chief Executive of the British Fashion Council, Caroline Rush and Conde Nast Artistic Director, Anna Wintour (R), view fashion designs at a reception to celebrate the Commonwealth Fashion Exchange at Buckingham Palace in London, Britain February 19, 2018. REUTERS/Dominic Lipinski/Pool

Spotify CEO Daniel Ek speaks during a press event in New York May 20, 2015. Spotify is branching out from its core streaming-music biz to encompass shortform videos, announcing partners including Disney's ESPN, NBC, Viacom's Comedy Central, Conde Nast Entertainment and Vice News. REUTERS/Shannon Stapleton

Spotify CEO Daniel Ek speaks during a press event in New York May 20, 2015. Spotify is branching out from its core streaming-music biz to encompass shortform videos, announcing partners including Disney's ESPN, NBC, Viacom's Comedy Central, Conde Nast Entertainment and Vice News. REUTERS/Shannon Stapleton

Bob Sauerberg, president of Conde Nast, responds to a question in a "Brand Matters" keynote panel discussion during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada January 7, 2015. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS)

Bob Sauerberg (L), president of Conde Nast, and Jay Rasulo, senior executive vice president and chief financial officer for The Walt Disney Co., participate in a "Brand Matters" keynote panel discussion during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada January 7, 2015. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS)

Deborah Wahl (L), chief marketing officer for McDonald's USA, and Bob Sauerberg, president of Conde Nast, participate in a "Brand Matters" keynote panel discussion during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada January 7, 2015. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS)

Bob Sauerberg (L), president of Conde Nast, and Jay Rasulo, senior executive vice president and chief financial officer for The Walt Disney Co., participate in a "Brand Matters" keynote panel discussion during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada January 7, 2015. REUTERS/Steve Marcus (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS)

Workmen clean windows from a suspended platform on One World Trade Center in New York November 10, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center has welcomed publishing giant Conde Nast as its first tenant. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS)

Workmen clean windows from a suspended platform on One World Trade Center in New York November 10, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center has welcomed publishing giant Conde Nast as its first tenant. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS)

Workmen clean windows from a suspended platform on One World Trade Center in New York November 10, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center has welcomed publishing giant Conde Nast as its first tenant. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS)

The One World Trade Center (C Rear) and Seven World Trade Center (R) buildings are seen from the 9/11 Memorial site as construction work continues, in New York November 5, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS CONSTRUCTION CITYSCAPE SOCIETY)

Members of the New York Fire Department are silhouetted as they gather near One World Trade Center, two days after the building officially opened, in New York November 4, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS CITYSCAPE SOCIETY)

A man is silhouetted as he takes photographs of One World Trade Center, two days after the building officially opened, in New York November 4, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS CITYSCAPE SOCIETY TPX IMAGES OF THE DAY)

Members of the New York Fire Department are silhouetted as they gather near One World Trade Center, two days after the building officially opened, in New York November 4, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/John Schults (UNITED STATES - Tags: BUSINESS CITYSCAPE SOCIETY TPX IMAGES OF THE DAY)

Conde Nast employees work in the lobby of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

A street level view of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

A building employee stands in the elevator lobby of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

A street level view of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

Employees stand in the lobby of the main entrance to the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

Members of the media look north at the Manhattan skyline from the 64th floor of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

A street level view of the One World Trade Center tower in New York, November 3, 2014. The 104-story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

Employees work in the lobby of the One World Trade Center tower in New York, November 3, 2014. The 104 story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

Employees work in the lobby of the One World Trade Center tower in New York, November 3, 2014. The 104 story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed publishing giant Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

Charles Townsend, CEO of publishing giant Conde Nast, arrives at One World Trade Center with Patricia Rockenwagner, senior vice president of Corporate Branding and Communications in New York, November 3, 2014. The 104 story skyscraper built after 9/11 as the Freedom Tower but now simply called One World Trade Center welcomed Conde Nast as its first tenant on Monday. REUTERS/Mike Segar (UNITED STATES - Tags: CITYSCAPE DISASTER REAL ESTATE BUSINESS)

First lady Michelle Obama (R) is introduced to speak by Conde Naste Artistic Director and Vogue Editor-In-Chief Anna Wintour (L) at the first ever Fashion Education Workshop at the White House in Washington, October 8, 2014. REUTERS/Jim Bourg (UNITED STATES - Tags: POLITICS FASHION SOCIETY)

Conde Nast Artistic Director Anna Wintour and Bee Shaffer arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York, May 6, 2013. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT FASHION)

A puzzle page from the no. 59 issue of Cool Kidz magazine is seen in this photo illustration shot in London, January 28, 2012. A British magazine distributed by a joint venture of Conde Nast and Hearst Corporation and aimed at primary school children has been featuring images of adult-rated video games. The most recent issue of Cool Kidz, which is published by privately-owned LCD Publishing, contained images of five games that carried age ratings of 18 years, under the European gaming industry's PEGI rating scheme. Picture taken January 28, 2012. REUTERS/Simon Newman (BRITAIN - Tags: SOCIETY MEDIA)

A puzzle page from the no. 59 issue of Cool Kidz magazine is seen in this photo illustration shot in London, January 28, 2012. A British magazine distributed by a joint venture of Conde Nast and Hearst Corporation and aimed at primary school children has been featuring images of adult-rated video games. The most recent issue of Cool Kidz, which is published by privately-owned LCD Publishing, contained images of five games that carried age ratings of 18 years, under the European gaming industry's PEGI rating scheme. Picture taken January 28, 2012. REUTERS/Simon Newman (BRITAIN - Tags: SOCIETY MEDIA)

The skyline of midtown Manhattan in New York is seen at sunset from Jersey City, New Jersey June 3, 2012. Pictured are the New York Times Building (L), the GE Building at Rockefeller Center (2nd L), the Conde Nast Building (2nd R) and the Bank of America Building (R). REUTERS/Gary Hershorn (UNITED STATES - Tags: CITYSPACE BUSINESS CONSTRUCTION)

The World Trade Center site is seen from the 34th floor of One World Trade Center in New York May 25, 2011. Media company Conde Nast Publications reached a deal to relocate to One World Trade Center from midtown Manhattan on Wednesday, a move that could draw other high-profile tenants to the Ground Zero project. One World Trade Center is being built by the Port Authority of New York and New Jersey. It has struggled to find firms to lease space in the skyscraper during the post-recession period, even after trying to make it more marketable by changing its name from the Freedom Tower. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS)

The World Trade Center site is seen from the 34th floor of One World Trade Center in New York May 25, 2011. Media company Conde Nast Publications reached a deal to relocate to One World Trade Center from midtown Manhattan on Wednesday, a move that could draw other high-profile tenants to the Ground Zero project. One World Trade Center is being built by the Port Authority of New York and New Jersey. It has struggled to find firms to lease space in the skyscraper during the post-recession period, even after trying to make it more marketable by changing its name from the Freedom Tower. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS)

The World Trade Center site is seen from the 34th floor of One World Trade Center in New York May 25, 2011. Media company Conde Nast Publications reached a deal to relocate to One World Trade Center from midtown Manhattan on Wednesday, a move that could draw other high-profile tenants to the Ground Zero project. One World Trade Center is being built by the Port Authority of New York and New Jersey. It has struggled to find firms to lease space in the skyscraper during the post-recession period, even after trying to make it more marketable by changing its name from the Freedom Tower. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS)

Floor plans for One World Trade Center are seen in New York May 25, 2011. Media company Conde Nast Publications reached a deal to relocate to One World Trade Center from midtown Manhattan on Wednesday, a move that could draw other high-profile tenants to the Ground Zero project. One World Trade Center is being built by the Port Authority of New York and New Jersey. It has struggled to find firms to lease space in the skyscraper during the post-recession period, even after trying to make it more marketable by changing its name from the Freedom Tower. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS)

Port Authority Executive Director Chris Ward (L) shakes hands with S.I. Newhouse Jr., chairman of Conde Nast, after signing a one million square foot lease at One World Trade Center in New York May 25, 2011. Media company Conde Nast Publications reached a deal to relocate to One World Trade Center from midtown Manhattan on Wednesday, a move that could draw other high-profile tenants to the Ground Zero project. One World Trade Center is being built by the Port Authority of New York and New Jersey. It has struggled to find firms to lease space in the skyscraper during the post-recession period, even after trying to make it more marketable by changing its name from the Freedom Tower. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS)

Modern Bride and Elegant Bride magazines are seen at a Borders bookstore in Washington October 5, 2009. Publisher Conde Nast will close Modern Bride, Elegant Bride, Gourmet and Cookie magazines following a review the publisher undertook to find ways to cut costs and staff in the face of the advertising recession. REUTERS/Yuri Gripas (UNITED STATES MEDIA BUSINESS)

A Modern Bride magazine is seen on display at a Borders bookstore in Washington October 5, 2009. Publisher Conde Nast will close Modern Bride, Elegant Bride, Gourmet and Cookie magazines following a review the publisher undertook to find ways to cut costs and staff in the face of the advertising recession. REUTERS/Yuri Gripas (UNITED STATES MEDIA BUSINESS)

Modern Bride and Elegant Bride magazines are seen on display at a Borders bookstore in Washington October 5, 2009. Publisher Conde Nast will close Modern Bride, Elegant Bride, Gourmet and Cookie magazines following a review the publisher undertook to find ways to cut costs and staff in the face of the advertising recession. REUTERS/Yuri Gripas (UNITED STATES MEDIA BUSINESS)

Modern Bride and Elegant Bride magazines are seen on display at a Borders bookstore in Washington October 5, 2009. Publisher Conde Nast will close Modern Bride, Elegant Bride, Gourmet and Cookie magazines following a review the publisher undertook to find ways to cut costs and staff in the face of the advertising recession. REUTERS/Yuri Gripas (UNITED STATES POLITICS)

Conde Naste publisher, Steven Quinn (L), and Marks and Spencer Chairman, Stuart Rose, pose for photographers during a reception for emerging fashion talent hosted by the wife of Britain's Prime Minister Gordon Brown, Sarah, in 10 Downing Street, in central London September 18, 2009. REUTERS/Arnold Slater/Pool (BRITAIN ENTERTAINMENT POLITICS FASHION SOCIETY)

Entertainer Ashlee Simpson (L) talks with other guests at the Conde Nast Traveler 8th Annual Hot List party at Mansion in New York April 17, 2008. REUTERS/Eric Thayer (UNITED STATES)

Pop star Ashlee Simpson arrives at the Conde Nast Traveler 8th Annual Hot List party at Mansion in New York April 17, 2008. REUTERS/Eric Thayer (UNITED STATES)

Pop star Ashlee Simpson arrives at the Conde Nast Traveler 8th Annual Hot List party at Mansion in New York April 17, 2008. REUTERS/Eric Thayer (UNITED STATES)

Pop star Ashlee Simpson arrives at the Conde Nast Traveler 8th Annual Hot List party at Mansion in New York April 17, 2008. REUTERS/Eric Thayer (UNITED STATES)

Pop star Ashlee Simpson arrives at the Conde Nast Traveler 8th Annual Hot List party at Mansion in New York April 17, 2008. REUTERS/Eric Thayer (UNITED STATES)

A subject in Artist Raul Vincent Enriquez's "I in the Sky" public art project types out a text message alerting a friend in New York March 4, 2008. Enriquez's project will use a series of still photographs to create a 30-second flipbook-style animation of his subject. The clips will be shown on a giant electronic billboard on top of the Conde Nast building at 4 Times Square from March 6 until April 26. The building's owner, the Durst Organization, is donating the billboard space. REUTERS/Brendan McDermid (UNITED STATES)

Artist Raul Vincent Enriquez poses for photos that will be used in his "I in the Sky" public art project in New York March 4, 2008. Enriquez's project will use a series of still photographs to create a 30-second flipbook-style animation of his subject. The clips will be shown on a giant electronic billboard on top of the Conde Nast building at 4 Times Square from March 6 until April 26. The building's owner, the Durst Organization, is donating the billboard space. REUTERS/Brendan McDermid (UNITED STATES)

A girl poses for photos that will be used in the "I in the Sky" public art project in New York March 4, 2008. Artist Raul Vincent Enriquez's project will use a series of still photographs to create a 30-second flipbook-style animation of his subject. The clips will be shown on a giant electronic billboard on top of the Conde Nast building at 4 Times Square from March 6 until April 26. The building's owner, the Durst Organization, is donating the billboard space. REUTERS/Brendan McDermid (UNITED STATES)

Artist Raul Vincent Enriquez poses for photos that will be used in his "I in the Sky" public art project in New York March 4, 2008. Enriquez's project will use a series of still photographs to create a 30-second flipbook-style animation of his subject. The clips will be shown on a giant electronic billboard on top of the Conde Nast building at 4 Times Square from March 6 until April 26. The building's owner, the Durst Organization, is donating the billboard space. REUTERS/Brendan McDermid (UNITED STATES)

Actress Olivia Wilde arrives for the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Elisabeth Rohm arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Olivia Wilde arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Olivia Wilde arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Claire Danes arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Claire Danes arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

DJ Grandmaster Flash arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Susie Castillo arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Susie Castillo arrives at the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Julianne Moore and her husband Bart Freundlich arrive to attend the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)

Actress Julianne Moore arrives to attend the Conde Nast Traveler Hot List party in New York April 19, 2007. REUTERS/Lucas Jackson (UNITED STATES)