After her pedicure, Oprah shows off her sparkling toes. "I usually go for a neutral nail, but Serena told me it's 2010, and I should take a walk on the wild side," Oprah says.

To become a certified nail tech, Serena says she has to complete 600 hours of manicures, pedicures and more. With 200 hours under her belt, Serena is well on her way, and she says she's been practicing on friends and family. "I do Venus' nails sometimes," she says. "She can't sit still!"

Serena says she's even considering opening a salon after she's certified. But, of course, the tennis courts come first. "Venus and I joke about how we're going to be out there forever," she says.

Go backstage and watch Serena talk about her other passion: Fashion!

For now, Serena is easing into the nail business by launching her own collection of OPI nail polish colors called the Grand Slam Collection. Serena says the colors will represent different tennis tournaments, such as the Australian Open, French Open, U.S. Open and Wimbledon.


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