"I grew up in a family of people who were obsessed with fashion," revealed Michael Kors in last month's Harper's Bazaar. An unsurprising fact considering the fashion designer and son of a former Revlon model -- who turns 52 years old today -- celebrated 30 years in the business last season and shows zero signs of slowing down.

Kors is constantly redefining the term "American sportswear" and in celebration of his birthday, we gathered the designer's most stylish muses -- from supermodels to one very supportive mother: