Australia's Lisbeth "Libby" Trickett competes in the women's 100m freestyle final during the FINA Swimming World Cup in Singapore November 5, 2011. REUTERS/Tim Chong (SINGAPORE - Tags: SPORT SWIMMING) 

Australia's Lisbeth "Libby" Trickett adjusts her swim cap before competing in the women's 50m freestyle final during the FINA Swimming World Cup in Singapore November 4, 2011. REUTERS/Tim Chong (SINGAPORE - Tags: SPORT SWIMMING) 

Lisbeth Trickett of Australia prepares for the women's 50m freestyle swimming final at the World Championships in Rome August 2, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia prepares to compete in the women's 50m freestyle swimming semi-final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Britta Steffen of Germany helps Lisbeth Trickett of Australia (R) with her swim suit after competing in the women's 50m freestyle swimming semi-final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia competes in the women's 50m freestyle swimming heats at the World Championships in Rome August 1, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia competes in the women's 50m freestyle swimming heats at the World Championships in Rome August 01, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Bronze medallist Lisbeth Trickett of Australia celebrates on the podium after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Bronze medallist Lisbeth Trickett of Australia celebrates on the podium after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Bronze medallist Lisbeth Trickett of Australia celebrates on the podium after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Bronze medallist Lisbeth Trickett of Australia celebrates on the podium after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Gold medallist Britta Steffen of Germany (C) celebrates on the podium with silver medallist Fran Halsall of Britain (L) and bronze medallist Lisbeth Trickett of Australia after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Gold medallist Britta Steffen of Germany (C) celebrates on the podium with silver medallist Fran Halsall of Britain (L) and bronze medallist Lisbeth Trickett of Australia after the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Britta Steffen (R) of Germany is congratulated by Lisbeth Trickett of Australia after winning and setting a world record in the women's 100m freestyle swimming final at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Therese Alshammar (L) of Sweden talks to Lisbeth Trickett of Australia after competing in the women's 50m butterfly swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia rests in the pool after competing in the women's 50m butterfly swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia looks on after competing in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett (L) of Australia smiles with Britta Steffen of Germany after women's 100m freestyle swimming semi-finals at the World Championships in Rome July 30, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING) 

Britta Steffen of Germany (R) and Lisbeth Trickett of Australia react after competing in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Britta Steffen of Germany and Lisbeth Trickett of Australia react after competing in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia competes in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia competes in the women's 100m freestyle swimming semi-finals at the World Championships in Rome July 30, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia reacts on after competing in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia reacts after competing in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING IMAGES OF THE DAY) 

Lisbeth Trickett of Australia prepares to compete in the women's 100m freestyle swimming semi-final at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia rests in the pool after competing in the women's 100m freestyle swimming heats at the World Championships in Rome July 30, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia jumps into the pool at the start of the women's 100m freestyle swimming heats at the World Championships in Rome July 30, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia jumps into the pool at the start of the women's 100m freestyle swimming heats at the World Championships in Rome July 30, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia prepares to compete in the women's 100m freestyle swimming heats at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia competes in the women's 100m freestyle swimming heats at the World Championships in Rome July 30, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING) 

Australia's team members Lisbeth Trickett, Marieke Guehrer, Shayne Reese and Felicity Galvez pose on the podium with their bronze medals after the World Championships in Rome July 26, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING) 

Olympic gold medallist swimmer Lisbeth Trickett of Australia prepares for a training session in the competition pool at the World Championships in Rome July 25, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING) 

Lisbeth Trickett of Australia smiles after winning the women's 50m freestyle event at the Paris Open swimming tournament June 20, 2009. REUTERS/Charles Platiau (FRANCE SPORT SWIMMING) 

Lisbeth Trickett of Australia swims in the women's 200-metre freestyle during the International Barcelona City swimming competition June 6, 2009. REUTERS/Albert Gea (SPAIN SPORT SWIMMING) 

Beijing Olympics gold medallist Lisbeth Trickett greets fans during the welcome parade for the Australian Olympic team in central Sydney September 15, 2008. REUTERS/Mark Baker/Pool (AUSTRALIA) 

Beijing Olympics gold medallist Lisbeth Trickett greets fans during the welcome parade for the Australian Olympic team in central Sydney September 15, 2008. REUTERS/Daniel Munoz (AUSTRALIA) 

(L-R) Leisel Jones, Emily Seebohm, Jessicah Schipper and Lisbeth Trickett of Australia pose with their gold medals for the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Wolfgang Rattay (CHINA) 

Lisbeth Trickett and Leisel Jones (R) of Australia celebrate next to their teammates Emily Seebohm (L, hidden) and Jessicah Schipper (2nd R) after winning the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Wolfgang Rattay (CHINA) 

(L-R) Silver medallists Natalie Coughlin, Rebecca Soni, Christine Magnuson and Dara Torres of the U.S. pose with gold medallists Emily Seebohm, Leisel Jones, Lisbeth Trickett and Jessicah Schipper of Australia after the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Kai Pfaffenbach (CHINA) 

(L-R) Lisbeth Trickett, Jessicah Schipper, Leisel Jones and Emily Seebohm of Australia pose with their gold medals for the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Kai Pfaffenbach (CHINA) 

Dara Torres (L) of the U.S. talks to Lisbeth Trickett (C) and Jessicah Schipper of Australia during the medal presentation ceremony for the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/David Gray (CHINA) 

(L-R) Emily Seebohm, Leisel Jones, Lisbeth Trickett and Jessicah Schipper of Australia pose with their gold medals for the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/David Gray (CHINA) 

(L-R) Lisbeth Trickett, Jessicah Schipper, Leisel Jones and Emily Seebohm of Australia pose with their gold medals for the women's 4x100m medley relay swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/Kai Pfaffenbach (CHINA) 

(L-R) Jessicah Schipper, Leisel Jones, Emily Seebohm and Lisbeth Trickett (bottom) of Australia celebrate after winning the women's 4x100m medley relay final at the National Aquatics Center during the Beijing 2008 Olympic Games August 17, 2008. REUTERS/David Gray (CHINA) 

Dara Torres (R) of the U.S. celebrates her silver medal as winner Britta Steffen (L) of Germany is congratulated by Lisbeth Trickett of Australia at the National Aquatics Center in Beijing 2008 Olympic Games, August 17, 2008. REUTERS/Jerry Lampen (CHINA) 

Cate Campbell (L) of Australia is congratulated by teammate Lisbeth Trickett (L) after winning the bronze medal in the women's 50 meters freestyle final during the Beijing 2008 Olympic Games at the National Aquatics Centre, August 17, 2008. The stadium is also known as the Water Cube. REUTERS/David Gray (CHINA) 

Lisbeth Trickett of Australia jumps before the start of her women's 50m freestyle swimming heat at the National Aquatics Centre during the Beijing 2008 Olympic Games, August 15, 2008. REUTERS/Jerry Lampen (CHINA) 

Lisbeth Trickett of Australia stretches before the start of her women's 50m freestyle swimming heat at the National Aquatics Centre during the Beijing 2008 Olympic Games, August 15, 2008. REUTERS/Jerry Lampen (CHINA) 

Lisbeth Trickett of Australia jumps into the pool at the start of her women's 50m freestyle swimming heat at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/Shaun Best (CHINA) 

Lisbeth Trickett of Australia smiles after swimming in her women's 50m freestyle heat at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/Wolfgang Rattay (CHINA) 

Lisbeth Trickett of Australia smiles after swimming in her women's 50m freestyle heat at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/Wolfgang Rattay (CHINA) 

Lisbeth Trickett (C) of Australia reaches for the wall ahead of Britta Steffen (R) of Germany and Kara Lynn Joyce of the U.S. during their women's 50m freestyle heat at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. Picture taken with underwater camera. REUTERS/Wolfgang Rattay (CHINA) 

Lisbeth Trickett of Australia reacts during the medal presentation ceremony for the women's 100m freestyle swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/David Gray (CHINA) 

Gold medallist Britta Steffen (L) of Germany and silver medallist Lisbeth Trickett of Australia celebrate after the women's 100m freestyle swimming final at the National Aquatics Centre during the Beijing 2008 Olympic Games, August 15, 2008. REUTERS/Jerry Lampen (CHINA) 

Britta Steffen (L) of Germany is congratulated by Lisbeth Trickett of Australia after the women's 100m freestyle swimming final at the National Aquatics Center during the 2008 Beijing Olympics, August 15, 2008. REUTERS/Jason Reed (CHINA) 

Britta Steffen of Germany waves after winning her gold medal for the women's 100m freestyle swimming final at the National Aquatics Center during the 2008 Beijing Olympics, August 15, 2008. Silver medallist Lisbeth Trickett of Australia is pictured at left. REUTERS/Shaun Best (CHINA) 

Gold medallist Britta Steffen (C) of Germany, silver medallist Lisbeth Trickett (L) of Australia and bronze medallist Natalie Coughlin of the U.S. pose after the medal presentation ceremony for the women's 100m freestyle swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/Wolfgang Rattay (CHINA) 

Britta Steffen of Germany celebrates with her gold medal next to silver medallist Lisbeth Trickett (R) of Australia after the women's 100m freestyle swimming final at the National Aquatics Center during the Beijing 2008 Olympic Games August 15, 2008. REUTERS/Wolfgang Rattay (CHINA) 

(L-R) Silver medallist Lisbeth Trickett of Australia, gold medallist Britta Steffen of Germany and bronze medallist Natalie Coughlin of the U.S. get on the medal platform after the women's 100m freestyle swimming final at the National Aquatics Center during the 2008 Beijing Olympics, August 15, 2008. REUTERS/Shaun Best (CHINA) 

(L-R) Silver medallist Lisbeth Trickett of Australia, gold medallist Britta Steffen of Germany and bronze medallist Natalie Coughlin of the U.S. pose with their medals after the women's 100m freestyle swimming final at the National Aquatics Center during the 2008 Beijing Olympics, August 15, 2008. REUTERS/Shaun Best (CHINA)