SARAH Jessica Parker was always going to get paid a lot for her turn in “Sex and the City: The Movie,” but Kristin Davis and Cynthia Nixon have their old frenemy, Kim Cattrall, to thank for getting them more money. A source told Page Six, “Kim’s been bragging to everyone that she held out for more money on the film and, in turn, got better salaries” for Davis and Nixon. A rep for Cattrall told us of the delay in making the movie: “It was a complicated time in Kim’s life. Her father was diagnosed with dementia and put into a home. She needed to take care of personal matters but is happy that, years later, the girls reunited to make a great movie.”