Who says you can't wear white after Labor Day? Not these stars, who all made our Look of the Day top picks this week. Our top five are: Kate Hudson in Prabal Gurung's plunging crimson gown, Abbie Cornish in a floral Roland Mouret column, Blake Lively in satin Chanel, Naomi Watts in a strong-shouldered Marchesa cocktail dress, and Sienna Miller's white Alessandra Rich gown. Which one is your favorite? Vote in the poll below!