Filming for Sex and the City

We just saw Kim Catrell and the girls filming at Escada (think Rodeo Dr., but actually it's on the corner of Wilshire/El Camino kitty korner from Rodeo). I'm assuming they were filming a scene for the new movie coming out, but of course could be wrong. "Sam" was dressed in a white skirt, yellow shirt, with a blue purse and shoes.