Hemsworth rolls up on set in Philadelphia. Plus: Sandra Bullock, Hilary & Luca, Katy Perry and more

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LITTLE MAGIC MAN

Sandra Bullock and son Louis, 2, make their way around Disneyland Thursday in Anaheim, Calif., where the pair was joined by Bullock's The Heat costar Melissa McCarthy and her family (not pictured). Check out his cute Sorcerer Mickey hat!