Los Angeles - Kat Dennings thinks Kim Kardashian's butt is "amazing".
The 2 Broke Girls actress was "very nervous" when the Keeping Up with the Kardashians star filmed a cameo for the show's 80th episode and was too shy to tell the reality TV star, 34, how much she admires her famous curves.
The 28-year-old star told The Ellen DeGeneres Show: "I didn't know what to expect because she's so famous. I was very nervous because I've seen so many episodes of Keeping Up with the Kardashians, and she was very sweet.
"Her ass is amazing! I am feminism, girl power, but I was just so in love with her ass. I just spit talking about it - that's how passionate I feel!"
She added: "There's an episode of Keeping Up With the Kardashians - an oldie, a vintage one, before she and Kanye West got married - and she was doing her music video and Kanye was there and he was like, 'I have never seen an ass like that.' And that's what I was thinking!"
Kat recently started dating Josh Groban after her co-star Beth Behrs introduced her to the singer, 33, and thinks he's a "wonderful person".
She said: "He's very witty on the Twitter and I saw his little tweets...and sometimes we would tweet back and forth."