Sarah Jessica Parker's Hair Moment, Emily Deschanel's Maternity Style, and More!

Last night's fetes were all about style! Sarah Jessica Parker made a memorable appearance at the annual Robin Hood Foundation gala in New York City, pairing a royal blue Halston Heritage cashmere sweater dress with a head-turning voluminously tall hairstyle. Blake Lively, Rachel Bilson and Alexa Chung lived out every girl's fashion fantasy when they donned Chanel to take in the label's Resort 2012 show on the French Riviera, and Emily Deschanel showed off her chic maternity style during Fox's evening with the cast of Bones in Los Angeles. Click through the gallery to see more photos from last night's hottest parties.