A group of power women — including Stephanie Winston Wolkoff, Condé Nast Entertainment’s Dawn Ostroff and Stefani Greenfield — were spotted at a Circo birthday lunch last week for Meryl Poster, the head of the Weinstein Company’s TV division. The meal also served as a celebration for the five Emmy nominations nailed by “Project Runway,” which is executive produced by Poster. We hear that all the guests were given Venessa Arizaga bracelets that say “Girls Rule.” Other guests spotted included fashion marketing maven Charlotte Blechman and Gannett Chief Marketing Officer Maryam Banikarim.