Flies on the wall claim Katy Perry was busted getting hot and heavy with female rapper Lady Sovereign after the “I Kissed A Girl” singer accidentally flashed her vagina at the MC during a wild party in her New York City hotel room earlier this year.

Lady Sovereign – real name Louise Harman – revealed to thehothits.com: “I’ve seen parts of Katy Perry I shouldn’t have seen.”

“At one of her afterparties she put her pajamas on and I don’t think she was wearing anything underneath. It was like a long t-shirt kind of thing.

“The party was out of control. Just a thing in her hotel room, but yeah I saw something I shouldn’t have seen.”

Celebrity tattle Perez Hilton, on the other hand, cites sources who claim Katy and Lady Sovereign “locked themselves in a bathroom” at the recent party were they spent more than an hour “doing naughty things” to one another.

Katy recently reunited with on-again/off-again boyfriend Travis McCoy, of the Gym Class Heroes, after breaking up in January.