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?

NAOMI WATTS

To fete Montblanc's Collection Princesse Grace de Monaco in Monte Carlo, the face and hair of Pantene channels the royal icon's legendary style in a classic black strapless gown, delicate jewelry and a loose updo.