Singers Demi Lovato and Kelly Rowland (L, rear), judges for the upcoming season of the Fox television network reality series "The X Factor", are interviewed after a photo opportunity in Los Angeles July 11, 2013. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

Judges for the upcoming season of the Fox television network reality series "The X Factor", (from L-R) Demi Lovato, Simon Cowell, Paulina Rubio and Kelly Rowland, pose during a photo opportunity in Los Angeles July 11, 2013. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

Judges for the upcoming season of the Fox television network reality series "The X Factor", (from L-R) Demi Lovato, Simon Cowell, Paulina Rubio and Kelly Rowland, pose during a photo opportunity in Los Angeles July 11, 2013. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

Kelly Rowland sings the U.S. national anthem before the fight between Floyd Mayweather Jr. and Robert Guererro for Mayweather Jr.'s WBC welterweight title at the MGM Grand Garden Arena in Las Vegas, Nevada May 4, 2013. REUTERS/Steve Marcus (UNITED STATES - Tags: SPORT BOXING ENTERTAINMENT) 

Singer Kelly Rowland arrives at the 24th Annual GLAAD Media Awards at JW Marriott Los Angeles at L.A. LIVE in Los Angeles, California, April 20, 2013. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT SOCIETY) 

Singer Kelly Rowland greets Brooklyn Sudano (R), the daughter of inductee Donna Summer, at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland greets Brooklyn Sudano (R), the daughter of inductee Donna Summer, at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland speaks during the induction of Donna Summer at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland speaks during the induction of Donna Summer at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland speaks during the induction of Donna Summer at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland arrives at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Phil McCarten (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland arrives at the 2013 Rock and Roll Hall of Fame induction ceremony in Los Angeles April 18, 2013. REUTERS/Phil McCarten (UNITED STATES - Tags: ENTERTAINMENT)

Singer Kelly Rowland is pulled away after posing backstage at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-BACKSTAGE) 

Singer Kelly Rowland poses backstage after presenting an award at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-BACKSTAGE) 

Recording artist Kelly Rowland arrives at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Recording artist Kelly Rowland arrives at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Recording artist Kelly Rowland arrives at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Recording artist Kelly Rowland arrives at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Recording artist Kelly Rowland arrives at the 55th annual Grammy Awards in Los Angeles, California February 10, 2013. REUTERS/Mario Anzuoni (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Presenters Kelly Rowland and Nas (R) speak on stage at the 55th annual Grammy Awards in Los Angeles, California, February 10, 2013. REUTERS/Mike Blake (UNITED STATES TAGS: ENTERTAINMENT) (GRAMMY-SHOW)

Presenters Kelly Rowland and Nas (R) speak on stage at the 55th annual Grammy Awards in Los Angeles, California, February 10, 2013. REUTERS/Mike Blake (UNITED STATES TAGS: ENTERTAINMENT) (GRAMMY-SHOW)

Beyonce (C) and Destiny's Child perform during the half-time show of the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Sean Gardner (UNITED STATES - Tags: SPORT FOOTBALL ENTERTAINMENT)

Beyonce (R), Michelle Williams (C), and Kelly Rowland of the former group Destiny's Child perform in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jim Young (UNITED STATES - Tags: SPORT FOOTBALL ENTERTAINMENT)

Beyonce (R), Michelle Williams (C), and Kelly Rowland of the former group Destiny's Child perform in the NFL Super Bowl XLVII football game in New Orleans, Louisiana, February 3, 2013. REUTERS/Jim Young (UNITED STATES - Tags: SPORT FOOTBALL ENTERTAINMENT)

A tattoo is seen on singer Kelly Rowland's foot as she arrives on the red carpet at the BET Honors in Washington January 12, 2013. REUTERS/Jonathan Ernst (UNITED STATES - Tags: ENTERTAINMENT) 

Singer Kelly Rowland arrives on the red carpet at the BET Honors in Washington January 12, 2013. REUTERS/Jonathan Ernst (UNITED STATES - Tags: ENTERTAINMENT) 

Singer Chaka Khan smiles as she speaks upon being honored at the BET Honors in Washington January 12, 2013. Also pictured is presenter Kelly Rowland (R). REUTERS/Jonathan Ernst (UNITED STATES - Tags: ENTERTAINMENT) 

Singer Chaka Khan smiles as she speaks upon being honored at the BET Honors in Washington January 12, 2013. Also pictured is presenter Kelly Rowland (R). REUTERS/Jonathan Ernst (UNITED STATES - Tags: ENTERTAINMENT) 

Show host Adam Lambert (C), and recording artists Kelly Rowland (L) and Keri Hilson (R) perform during a tribute to Donna Summer at the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Recording artist Kelly Rowland (C) and show host Adam Lambert (R) perform during a tribute to Donna Summer at the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Recording artist Kelly Rowland performs during a tribute to Donna Summer at the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Recording artist Kelly Rowland performs during a tribute to Donna Summer at the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Recording artist Kelly Rowland (C) performs during a tribute to Donna Summer during the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Recording artist Kelly Rowland performs during a tribute to Donna Summer during the VH1 Divas 2012 show in Los Angeles, December 16, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) 

Kelly Rowland (L) and Elisha Cuthbert announce David Guetta as the winner of the award for favorite electronic dance music artist at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (AMA-SHOW) 

Close up view of the jewelry worn by singer Kelly Rowland as she arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT) (AMA-ARRIVALS) 

Singer Kelly Rowland arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT) (AMA-ARRIVALS) 

Singer Kelly Rowland arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT) (AMA-ARRIVALS) 

Singer Kelly Rowland poses as she arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT PORTRAIT) (AMA-ARRIVALS) 

Singer Kelly Rowland poses as she arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT PORTRAIT) (AMA-ARRIVALS) 

Singer Kelly Rowland poses as she arrives at the 40th American Music Awards in Los Angeles, California, November 18, 2012. REUTERS/Jonathan Alcorn (UNITED STATES - Tags: ENTERTAINMENT PORTRAIT) (AMA-ARRIVALS) 

Singer Kelly Rowland arrives for the 16th annual Keep Memory Alive "Power of Love Gala" and 70th birthday celebration for Muhammad Ali at the MGM Grand Garden Arena in Las Vegas, Nevada February 18, 2012. Proceeds from the event benefit the Cleveland Clinic Lou Ruvo Center for Brain Health in Las Vegas and the Muhammad Ali Center in Louisville, Kentucky. REUTERS/Steve Marcus (UNITED STATES - Tags: ENTERTAINMENT SPORT BOXING) 

Singer Kelly Rowland arrives for the 16th annual Keep Memory Alive "Power of Love Gala" and 70th birthday celebration for Muhammad Ali at the MGM Grand Garden Arena in Las Vegas, Nevada February 18, 2012. Proceeds from the event benefit the Cleveland Clinic Lou Ruvo Center for Brain Health in Las Vegas and the Muhammad Ali Center in Louisville, Kentucky. REUTERS/Steve Marcus (UNITED STATES - Tags: ENTERTAINMENT SPORT BOXING) 

Kelly Rowland arrives for the 16th annual Keep Memory Alive "Power of Love Gala" and 70th birthday celebration for Muhammad Ali at the MGM Grand Garden Arena in Las Vegas, Nevada February 18, 2012. Proceeds from the event benefit the Cleveland Clinic Lou Ruvo Center for Brain Health in Las Vegas and the Muhammad Ali Center in Louisville, Kentucky. REUTERS/Steve Marcus (UNITED STATES - Tags: ENTERTAINMENT SPORT BOXING) 

Singer Kelly Rowland arrives
at the 54th annual Grammy Awards in Los Angeles, California February 12, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Singer Kelly Rowland arrives
at the 54th annual Grammy Awards in Los Angeles, California February 12, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Singer Kelly Rowland arrives at the 54th annual Grammy Awards in Los Angeles, California February 12, 2012. REUTERS/Danny Moloshok (UNITED STATES - Tags: ENTERTAINMENT) (GRAMMYS-ARRIVALS) 

Singers Kelly Rowland (L) and Michelle Williams arrive at the Roc Nation Pre-Grammy Brunch in West Hollywood, California February 11, 2012. REUTERS/Jason Redmond (UNITED STATES - Tags: ENTERTAINMENT) 

Singer and actor Kelly Rowland arrives at the Roc Nation Pre-Grammy Brunch in West Hollywood, California February 11, 2012. REUTERS/Jason Redmond (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland (C) and Michelle Williams (R) greet singer Rico Love as they arrive at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. Rowland and Williams were members of the group 'Destiny's Child.' REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland (L) poses with singer Michelle Williams at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. Rowland and Williams were members of the group 'Destiny's Child.' REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland arrives at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland (2nd R) and music industry executive and former president of Universal Motown Records Sylvia Rhone (3rd R) pose with ESSENCE Editor in Chief Constance White (L) and ESSENCE president Michelle Ebanks (R) at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT MEDIA) 

2012 Grammy Award nominee, singer Kelly Rowland (R) and music industry executive and former president of Universal Motown Records Sylvia Rhone arrive at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland arrives at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland arrives with model Shawn Sutton at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland is interviewed as she arrives at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland (L) greets photographer Bill Jones (C) as she arrives at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

2012 Grammy Award nominee, singer Kelly Rowland arrives at the 3rd annual ESSENCE Black Women in Music event in Los Angeles, California February 8, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) 

Singer Kelly Rowland arrives at the BET Honors in Washington January 14, 2012. REUTERS/Joshua Roberts (UNITED STATES - Tags: ENTERTAINMENT)