Olivia Wilde's Sexy Style Evolution

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She's been a red carpet fixture since bursting onto the scene in 2004 when she played Mischa Barton's lesbian girlfriend on the hit show The O.C., but Olivia Wilde officially hit her style stride in the last year and half, showing up at events in an array of gorgeous looks.

From the plunging gunmetal Gucci gown she wore at the 2010 Golden Globes to all the chic ensembles she's donned while promoting her two new films, The Change-Up and Cowboys & Aliens this summer, the 27-year-old actress knows how to turn heads with a mix of sexy and glam fashion choices.

And since splitting with her husband of eight years, Italian prince Tao Ruspoli earlier this year, Wilde's been looking hotter than ever.