Anna Kendrick: Katy Perry "Finger-Banged My Cleavage" at the Grammys

Pitch Perfect star also shared an intimate moment with Beyoncé at the awards show

Katy Perry and Anna Kendrick had quite a night together!

The "Dark Horse" singer, 29, and the Into the Woods star, 28, bonded at the 56th Annual Grammy Awards in L.A. on Sunday, Jan. 26—so much so that the pop star got frisky with the Oscar-nominated actress! "Katy Perry finger-banged my cleavage. It was a weird night," Kendrick said during a Tuesday, Jan. 28 appearance on TBS' Conan. "She's very mature!"

Because of her risqué Azzaro dress, "I was kind of asking for it," Kendrick joked. "If nobody had done it I would've been a little sad." She added that she's met Perry before, "and she's aggressive. I like it."

Kendrick partied with Perry and John Mayer late that night at Universal Music Group Post-Grammys bash in downtown L.A. "You know you're hungover when you brush your teeth with your sunglasses on," the Pitch Perfect star tweeted the next morning.

The only moment that topped being "finger-banged" by Perry was meeting Mrs. Carter herself.

"I know everybody is, but I'm totally obsessed with Beyoncé. I walked past Beyoncé at one point, and because I'm not worthy I didn't look at her," Kendrick admitted. "We did make a detour down the front just to walk past Beyoncé: 'We'll just walk past her and get some of her aura.' We walked past and my friend was like, 'Dude, she was motioning to you and you just walked past her!' And I panicked. I mean, I didn't know quite what to do, but I thought, 'Once in a lifetime, just do it.' I went back and I was like, 'I'm so sorry to do this, I just wanted to meet you. You're such an inspiration.' And she stood up—she was so nice—and she points to Jay Z and was like, 'Oh, we just watched you on the Kennedy Center Honors. You were so great. You were so cute in your little red dress.'"

"She said that I had a little red dress, which means that she actually watched it, or it means that I was having a stroke and I imagined the entire thing," she laughed.

As Kendrick chatted with the "Drunk in Love" singer, Jay Z entertained the actress' pals.

"He was motioning to my friends and saying 'She's so cute! She's so excited!'" Kendrick said. "So my friends are like having a moment with Jay Z where they're like, 'We are on the same level.'"

Well, not quite. Still, Beyoncé "was really, really nice," Kendrick said. "It was a crazy night."