In one scene from the Sex and the City movie they were filming last week — I won't give away more than that, wouldn't want to spoil the movie for anyone! — Miranda, Charlotte, and Samantha all wear Zac Posen dresses. Miranda looks ravishing in a cobalt blue floor-length number and Samantha is radiant in red ruffles, both from Posen's Spring 2008 collection. Meanwhile, Charlotte went all-out in an architectural black mermaid gown from Zac's Fall 2007 collection. But most importantly: who wore Zac best?!