Halloween isn't the only thing celebs are dressing up for this weekend, yesterday Diane Kruger, Jessica Alba, Eva Mendes, Camilla Belle and others donned their finest ensembles for a Vogue luncheon at the Chateau Marmont hosted by the devil herself, Anna Wintour.

west hollywood chateau marmont vogue fashionOk, while most of the ladies made an effort, Diane looked like she just stumbled in after a day spent running errands in shorts and a sweater! WTF? And she usually gets it so right!