Michelle Williams turns heads at premiere of 'Oz: The Great and Powerful' as she shows black underwear underneath white dress

Michelle Williams wore a headline-grabbing dress to the premiere of Oz: The Great and Powerful, the prequel to Wizard of Oz, on Wednesday night in Hollywood.

The former Dawson’s Creek star wore a white Prada dress that looked conservative in the front, but as she turned to the side, showed a daring split that exposed her black underwear.

The NY Daily News reports that Williams, 32, plays Glinda the good witch in the film, and she posed with her co-stars Mila Kunis and Rachel Weisz.

Kunis went a little more kid-friendly with her fashion choice, wearing a princess-like nude Dolce & Gabbana dress, New York Magazine reports.

But Williams’ revealing dress wasn’t the only buzz of the night, as co-star James Franco arrived to the premiere in a hot air balloon.

Starpulse reports that Franco plays a magician who gets transported to the land of Oz, where he’s expected to become their powerful ruler after he defeats the wicked witch.

Disney’s Oz: The Great and Powerful is set to come out on March 8.

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