Mila Kunis earned a place on Hollywood's best dressed list last year thanks to the head-turning red carpet looks she chose promoting Black Swan and Friends With Benefits.

PHOTOS: The best dressed stars of 2011

And for the St. Jude Children's Research Hospital's 50th Anniversary Gala in Beverly Hills on Saturday the 28-year-old actress stepped out in her most daring dress yet -- a sexy purple lace-up Prabal Gurung design hot off the Spring 2012 runway.

Kunis, who was just named the latest face of Christian Dior and claims to be "just learning about fashion," paired the violet number with Elie Saab shoes, a Killian clutch and wore her hair in loose waves.

"In my daily life, I don't wear the most feminine pieces," she recently told WWD. "But I love to feel feminine when I'm on the red carpet."

 

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