Lindsay and Kate both after Keira's ex.

Are Lindsay Lohan and her new BFF, supermodel Kate Moss fighting over the same man? According to Page Six, Lindsay spent some time cuddling up with Keira Knightley’s ex, model Jamie Dornan at a Calvin Klein party on Monday. The New York Daily News claims Moss was doing the same thing that night. Is a cat fight in the cards?

Says Page Six, “Lindsay was seen huddling with…Jamie Dornan.� NYDN says, “[Kate] couldn't take her eyes off…Jamie…(That is, when Moss wasn't giggling with Lindsay Lohan.)� A witness to Moss’s flirtations said, she and Dornan "were touching and whispering in one another's ear all night.� And these women aren’t the only ones after Keira’s sloppy seconds. A British tabloid recently reported that Sienna Miller had been spotted out with Jamie as well.

Still, Kate and Lindsay don’t seem the type to let a man get in the way of their friendship. Their revolving bedroom doors make it too complicated to concentrate on just one guy. Moss is still linked to her on-again, off-again lover, Pete Doherty, while Lindsay has recently been caught kissing Serena Williams’s ex, Brett Ratner.