Dana Vollmer won a gold medal at the Olympics and set a world record, too. United States' Dana Vollmer celebrates her gold medal win in the women's 100-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Sunday, July 29, 2012. United States' Dana Vollmer embraces United States' Claire Donahue after Vollmer's gold medal win in the he women's 100-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Sunday, July 29, 2012. United States' Dana Vollmer, foreground, reacts to her gold medal win as Australia's Alicia Coutts , center, with Sweden's Sarah Sjostrom after the women's 100-meter butterfly swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Sunday, July 29, 2012. United States' Dana Vollmer, right, and Australia's Alicia Coutts react to Vollmer's gold medal win in the women's 100-meter butterfly swimming...