P Diddy says he will attend Russell Brand's stag party if he gets an invitation.

But the rapper mentioned that some fiancées have banned him from some of his friends parties before, and he's not sure if Katy Perry will allow him to go to the pre-wedding party.

He told The Sun: "I'm not his best man but if I get invited, I'll be there. "I kind of get banned from stuff like that before the wedding. The wives always say, 'Stay away from Puffy'."

Mmm - I wonder why Diddy? Do you think Brand and Diddy are an unlikely pair? Can you imagine what will happen at the party?

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Check out our pictures of P Diddy in London earlier today...