It's not quite Spring yet, but celebrities are already experimenting with bright colors. This week, Gwyneth Paltrow and Vanessa Hudgens dabbled with purple, while Keira Knightley and Lindsay Lohan lightened up the mood in white and lightwash jeans. Malin Akerman, on the other hand, took the vampy route in all black. How well were you paying attention to their ensembles? Let's find out.