Gwyneth Paltrow is showing off her sexy side!

In the new trailer for "Thanks for Sharing," Paltrow plays the love interest of a sex addict, Mark Ruffalo ... and strips down to just her bra and underwear in the new sneak peek of the flick.

The movie follows the always adorable Ruffalo, along with two other people as they undergo a 12-step treatment for sex addiction.

Gotta give it to Gwyn, the 40-year-old looks better than most women half her age! But the actress isn't the only one who steals the screen -- P!nk also plays a sex addict in the comedy, and she's hilarious.

Who knew the "Just Give Me A Reason" singer could act? We're definitely excited to see "Thanks for Sharing"! 

What do you think of Gwyn's lingerie-clad scene? Sound off below, and make sure to check out "Thanks for Sharing," in theaters September 8th.

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