Is sidebutt the new sideboob? Gwyneth Paltrow revealed a whole lot of skin in an ultra-sheer dress at the Hollywood premiere of Iron Man 3 on Wednesday, Apr. 24.

The 40-year-old actress stepped out on the red carpet of the El Capitan Theatre wearing an Antonio Berardi gown (with apparently nothing underneath) that featured sheer black paneling down each side, offering a side view of her naked posterior. Risking a wardrobe malfunction in more ways than one, Paltrow proudly modeled the dress for photographers and showed off her flawless figure.

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Chris Martin's wife and mother of Apple, 8, and Moses, 6, recently bragged about a compliment she received from a friend on her impressive booty -- honed in part by the Tracy Anderson Method. "I said, 'You know, this isn't so bad for 40, right?'" Paltrow recalled to reporters on April 4. "And [my friend] goes, 'It's not so bad for a 22-year-old stripper!'"

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On the carpet Wednesday, Paltrow told reporters about how her fashion sense has rubbed off on her kids. "They're very specific. My daughter is very specific," she said. "My son . . . they have their influences and they try to dress like their favorite people and it's very sweet."

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In her new film, Paltrow dons a very different style by putting on the now-iconic Iron Man suit.

Her favorite part of wearing the superhero ensemble? "I think my son's face when he came on set and saw me dressed as Iron Man," she shared.

This article originally appeared on Gwyneth Paltrow Skips Underwear in Sheer Dress at Iron Man 3 Premiere