1. BEST: Demi Lovato flaunted her curves in a fab Isabel Marant frock on the Extra set, pairing the fringed number with Christian Louboutin Maggie pumps. 3. BEST: Elizabeth Olsen looked super sophisticated at the Martha Marcy May Marlene premiere at the New York Film Festival, rocking an Alexander McQueen halter dress with velvet embellished heels from the same collection.