Celebrity Last Night's Events: Charlotte Ronson Fêtes Nicole Richie's Macy's Collection and More! By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Published on July 12, 2012 @ 05:15PM Pin Share Tweet Email Photo: WireImage Charlotte Ronson stepped out to support pal Nicole Richie at a bash celebrating her collection for Macy's Impulse at Daniel's in New York City. "It’s final decision time!" the Fashion Star mentor told InStyle of her line when we caught up with her at DoSomething.org and Bing's Summer of Doing event earlier this week. "I’ve been working on it for a long time so I’m really excited." The lineup is set to launch this September and includes maxi skirts and crop tops in retro prints. Click through the gallery to see more stars at last night's hottest events. —Leah Abrahams, with reporting by Nakisha Williams