Last Night's Look: Hit or Miss?

Vote on this week's styles, including Ashley Tisdale, Leighton Meester and more stars! You decide – are they fashionistas or flops?

JESSICA CHASTAIN

A sweeping Elie Saab brocade and lace gown, worn with Jimmy Choo sandals, makes for a classic Hollywood arrival from ingenue Chastain, who attends the Venice Film Festival on behalf of Wilde Salome.