U.S. swimmer Dana Vollmer

LONDON, ENGLAND - JULY 29: gold medallist Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Al Bello/Getty Images)

LONDON, ENGLAND - JULY 29: gold medallist Dana Vollmer of the United States poses on the podium during the medal ceremony after setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States competes on her way to winning the gold medal and setting a new world record in the Womans 100m Butterfly during the 2012 London Olympics at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Ian MacNicol/Getty Images)

LONDON, ENGLAND - JULY 28: Dana Vollmer of the United States competes in the second semifinal heat of the Women's 100m Butterfly on Day 1 of the London 2012 Olympic Games at the Aquatics Centre on July 28, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record in the Womans 100m Butterfly during the 2012 London Olympics at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Ian MacNicol/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer (R) of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Jamie Squire/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Al Bello/Getty Images)

LONDON, ENGLAND - JULY 29: Dana Vollmer of the United States celebrates after winning the gold medal and setting a new world record time of 55.98 seconds in the Women's 100m Butterfly final on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Al Bello/Getty Images)

LONDON, ENGLAND - JULY 28: Dana Vollmer of the United States prepares for the start of the second semifinal heat of the Women's 100m Butterfly on Day 1 of the London 2012 Olympic Games at the Aquatics Centre on July 28, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

LONDON, ENGLAND - JULY 28: Dana Vollmer of the United States competes in heat six of the Women's 100m Butterfly on Day One of the London 2012 Olympic Games at the Aquatics Centre on July 28, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

ATHENS - AUGUST 18: Natalie Coughlin, Carly Piper, Dana Vollmer and Kaitlin Sandeno of USA celebrates after the USA won the women's swimming 4 x 200 metre freestyle relay final with a world record time of 7:53.42 on August 18, 2004 during the Athens 2004 Summer Olympic Games at the Main Pool of the Olympic Sports Complex Aquatic Centre in Athens, Greece. (Photo by Chris McGrath/Getty Images)

Dana Vollmer won the 100 meter butterfly.

OMAHA, NE - JUNE 26: Dana Vollmer celebrates after she received her gold medal for finishing first in the championship final heat of the Women's 100 m Butterfly during Day Two of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 26, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

OMAHA, NE - JUNE 26: Dana Vollmer adjusts her goggles prior to competing in the championship final heat of the Women's 100 m Butterfly during Day Two of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 26, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

OMAHA, NE - JUNE 26: Dana Vollmer celebrates after she finished first in the championship final heat of the Women's 100 m Butterfly during Day Two of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 26, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

OMAHA, NE - JUNE 25: Dana Vollmer competes in heat 17 of the Women's 100 m Butterfly during the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 25, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

OMAHA, NE - JUNE 25: Dana Vollmer reacts after she set a new american record while competing in heat 17 of the Women's 100 m Butterfly during the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 25, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)