While filming for the movie Get Him To The Greek, Russell Brand filmed scenes with Katy Perry, Pink and Christina Aguilera in which he kisses Katy and Pink.  He didn’t need to ‘act’ for any of the kisses:

“In the scene with Pink and Katy Perry I had to do kissing. I got to snog them both in a day. Katy Perry is lovely. She is the kind of girl who would skip downstairs lightly.
“Pink is a lovely woman – a forceful, sexy woman. With both of them I didn’t act, the acting stopped.”

Of Christina Aguilera he says:

 ”Christina was amazing. She is unbelievable – a perfect object. How could you ever talk to her about anything other than sex?

He just lived many men’s dreams!!
Source

SplashNews