Katy Perry spent an interesting weekend with the KatyCats as she chatted with DJ Nessa from Wild 94.9 of San Francisco.

They talked about her much awaited 3D documentary concert film and the DJ also threw in a couple of sex related questions to the 'Wide Awake' singer. Perry insisted on this point that she refuse to answer the hot questions since she considers herself as a 'good Christian girl.'

The hottest part of the interview came when she revealed that she would like to have sex with her best pal and pop singer, Rihanna.

The topic rose when DJ Nessa asked Perry if the news about her and RiRi making music together will ever push through. Then the 'Teenage Dream' star just popped up the answer without hesitation, 'No, but we're gonna have sex.'

If such a video will leak, we're pretty sure all the men will be the major viewers of it over at YouTube. With two women as alluring as Perry and Rihanna working together to make music is already great, even without a sex video tape.

Check out the full interview below:

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