Celebrity Style Quiz For August 29-September 2, 2011

This week, we spotted Alexa Chung not once but twice sporting cool transitional looks in Sydney — and she was in good sartorial company. Ali Larter glammed up her jeans with a sophisticated sequin jacket, and Kourtney Kardashian caught our eye in cobalt blue. Can you remember who wore what? Take the quiz now to test your skills.