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Even before she was chosen as one of PEOPLE’s most beautiful people over a decade ago, athlete Aimee Mullins had already conquered the competitive world of high fashion modeling–despite a condition that has required her to wear prosthetic legs since childhood. Now Mullins has earned another coup, inking a deal as the newest global ambassador for L’Oréal Paris. “The ‘Because I’m Worth It’ tagline means a lot to me,” she says in a statement announcing her appointment. “Beauty is not skin-deep; it can be a means of self-affirmation, a true indicator of personality and confidence,” continues Mullins, who was born without fibula bones and whose legs were amputated below the knees when she was a year old to allow her to learn to walk with artificial limbs. Over the years Mullins has shown her range by shifting from track star to model, posing for Kenneth Cole and even becoming a muse to designer Alexander McQueen, whose London show she once walked in wearing intricately carved wooden prosthetics. Aimee joins the L’Oréal Paris family of spokespeople, including Beyoncé, Eva Longoria, Jennifer Lopez and Gwen Stefani. –Kim Peiffer