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Lily Collins's style transformation

Lily Collins 2013
Lily Collins looks gorgeous in a lacy white gown at the Toronto premiere of "Mortal Instruments: City of Bones" on Aug. 15. (John R. Kennedy / Splash News)

It's been nearly 10 years since we saw 15-year-old Lily Collins hit the red carpet alongside dad Phil. Since then, she's grown from a sweet teen to a television actor ("90210") to a full-fledged movie star, with her latest film "Mortal Instruments: City of Bones" hitting theatres on Aug. 21.

Over the past several years, we've watched Collins morph into a serious actor -- and we've also watched her transform her red carpet style. From gorgeous ball gowns to tiny crop tops to vampy goth looks, one thing is for sure: Collins isn't afraid to take risks. Scroll through the gallery below to see how this star's style has changed over the years. -- by Hilary Hagerman