Celeb Fashion Hit or Miss

Vote on this week's styles from Mary-Kate Olsen, Rihanna, Blake Lively and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

NATALIE PORTMAN

Another night, another dress! The Other Boleyn Girl star keeps it simple in a sweet Balenciaga black number, fringed Te Cesan heels from her line and a Chanel purse for a private dinner in N.Y.C. in honor of her new movie.