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Olympics Day 2 - Swimming

LONDON, ENGLAND - JULY 29: (L-R) Missy Franklin of the United States and Belinda Hocking of Australia hug after competing in the Women's 100m Backstroke heat 6 on Day 2 of the London 2012 Olympic Games at the Aquatics Centre on July 29, 2012 in London, England. (Photo by Adam Pretty/Getty Images)

Swimming phenom Missy Franklin

Missy Franklin's four gold medals in London haven't changed her personality one bit – she's still a happy-go-lucky teen.