Diddy & Sienna Just Friends

Diddy, who welcomed twin girls with longtime love Kim Porter in December of 2006, is brushing off burbling that he's back on the stork's delivery route. Seems the rumor mill is churning with talk that Danity Kane singer Aubrey O'Day, whom the mogul personally selected for the girl group, is going to make him a daddy for the fifth time. His rep, however, adamantly refutes the rumblings, telling the New York Daily News, "There's no truth to this." Meanwhile, the Daily Mirror says Diddy has been spending time with Sienna Miller during his recent stopover in London, supposedly swinging by her pad in the early hours of Friday morning and partying with her on Sunday night. The two also met up earlier in the week at a West End club, but the starlet exited with current boyfriend Jamie Burke. Diddy and Sienna have repeatedly insisted they're just friends.