@annakendrick47 / Twitter 1 / 17
@annakendrick47 / Twitter 1 / 17

Anna Kendrick has at least one overly eager fan. The "Pitch Perfect" star shared a picture of Katy Perry grabbing her boob at the Hollywood Stands Up to Cancer event on Jan. 28 on Twitter.

PHOTOS: Katy Perry's craziest style moments

"The girl can't help it. @katyperry," Kendrick, 28, captioned the picture.

The new besties were attending the celeb-filled event hosted by Reese Witherspoon and her hubby Jim Toth, which benefited cancer research.

PHOTOS: Memorable Grammy moments

But this wasn't their first cleavage-filled encounter. At the Jan. 26 Grammy awards, Kendrick wore a cleavage-baring cream-colored Azzaro gown to present and Perry performed her latest single "Dark Horse" for the celeb-filled crowd.

PHOTOS: Stars at the 2014 Grammys

And in a January appearance on Conan, Kendrick told host Conan O'Brien about the Grammys, recalling, "Katy Perry finger-banged my cleavage. I was kind of asking for it. If nobody had done it, I would've been a little sad."


Celebs without makeup

Best and worst beach bods

Best bikini Twitpics