Margot Robbie stunned at the “Once Upon A Time In Hollywood” L.A. premiere at the TCL Chinese Theatre. The actress donned an ivory Chanel  Fall 2019 Couture silk-chiffon layered gown. She finished the look with gold accessories. Definitely best dressed of the week! Sadly at the same event, Britney Spears really missed the mark. The poster just looked messy in an ill-fitting Nookie red one-shoulder dress, with a cutout bodice and black sandals. Sorry Brit, worst dressed of the week.