They look all peachy keen and sexified for the big screen, but when the cameras stopped rolling, the claws came out!

Star magazine is reporting that Kim's co-stars on the 'Sex and the City Movie' are getting a hush-hush bonus for putting up with her diva fits.

An insider tells Star, "Kristin Davis and Cynthia Nixon are getting a 'hush-hush' bonus for not being divas during filming and as a thank-you for putting up with Kim."