Julia Restoin Roitfeld, daughter of Paris Vogue's former editor in chief Carine Roitfeld, made a stylish entrance Feb. 10 at the after-party for her curator brother Vladimir's "RETNA: The Hallelujah World Tour" art exhibition in New York.

The new face of Lancôme rubbed elbows with Mary-Kate Olsen and Theodora Richards (daughter of Keith) in an electric-blue Pucci frock from the Spring 2011 collection that was embroidered with tiny mirrors and pompoms. Accessories were minimum: Chanel quilted handbag and black pumps completed her party look.

The 29-year-old, who recently wore Tom Ford in a spread for V Magazine, is surely making her fashionable mama proud.

Meanwhile, learn more about the woman who is set to replace Julia's mother at Paris Vogue.