So we know "side boob" is a thing... but we think Gwyneth Paltrow may have singlehandedly just made "side bum" a thing.

Sure, she was just named People's "Most Beautiful Woman," but we doubt many people were looking at her face last night at the Iron Man 3 premiere in L.A.

Paltrow walked the red carpet in an Antonio Berardi gown with sheer panels that, from the front, seemed rather demure... until she turned sideways.

Now if that perky tush is not an endorsement for the Tracy Anderson method/Paltrow's no-sugar, no-gluten, no-fun diet, we don't know what is.

Click through to see this dress and her enviable glutes from every angle. Then go slather yourself with anti-cellulite cream.

Photos: Getty

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