Mila Kunis' Sexy Transformation

Credit: SGranitz/WireImage; Stephen Lovekin/FilmMagic; Jim Spellman/WireImage; Steve Granitz/WireImage

Mila Kunis is all grown up!

Though she tried her best to impress at the Fox Television TCA event in September 1998, the 27-year-old actress didn't come into her own until much later in her career.

"I'm a very casual person in real life, so I do find it very fun to be able to have the opportunity to dress up," the Friends With Benefits star tells Flare's August issue.

From her grungy days at the 2000 Billboard Music Awards to her ultra-glam 2011 Oscars moment, look back on how Kunis' style has evolved since her That '70s Show days.