The stars were out celebrating, promoting, and partying this week, and shared their fun photos with us on Twitter! Channing Tatum stayed in character wearing a police uniform during his 21 Jump Street press tour while Jessica Alba got wild with Pharrell Williams in Paris. Another party animal, the Beckhams' dog Coco, marked Brooklyn Beckham's big day by wearing a cute birthday hat. This week's batch of celebrity Twitpics also got a royal touch when Jamaican athlete Usain Bolt shared a snap of his race with a visiting Prince Harry. Click through now to see more celeb photos from the week and make sure to follow PopSugar on Twitter!