Emma Watson's dress slipped out of place at the Hollywood premiere of The Perks of Being a Wallflower Monday causing the actress to suffer a nip slip.

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The 22-year-old actress' revealed major sideboob in her low-cut Giorgio Armani gown, but was fortunately wearing a flesh-colored pastie to cover her breast. 

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Despite the momentary wardrobe malfunction, Watson looked on the red carpet with her hair pulled back and bright red lipstick.

Watson has already been receiving much praise for her role as Sam in The Perks of Being a Wallflower, based on Stephen Chbosky's popular novel.

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After the film premiered Saturday at the Toronto International Film Festival, Watson tweeted with a smiley face, "Did I tell you we got a standing ovation in Toronto Film Festival?"

This article originally appeared on Usmagazine.com: Emma Watson Risks Nip Slip at Movie Premiere