Hemsworth rolls up on set in Philadelphia. Plus: Sandra Bullock, Hilary & Luca, Katy Perry and more
Credit: Mike Coppola/Getty
Updated: Friday Dec 14, 2012 | 06:00 AM EST
More from PEOPLE
- How Radio Superstar Elvis Duran Lost 100 Lbs.
- Read the Cover Story: Inside Blake & Miranda's Shocking Split
- How Scott Disick May Have Blown a Second Chance with Kourtney Kardashian
- Sarah Michelle Gellar's Daughter Inherited Her Mom's Buffy Strength, Freddie Prinze Jr. Reveals