Somebody is spreading false and disgusting rumors! At least we sure hope it's not true!
Looks like Katy Perry had a lot of fun at a party (above) in New York City earlier this month with Lady Sovereign.
A well-placed birdie tells us that the I Kissed A Girl signer and the British rapper "locked themselves in a bathroom" for way too long and were doing naughty things.
Uhm, no. Ewww. Wrong.
We thought she had better taste than that!
That's almost as bad as….John Mayer making out with Perez!!!