12/16/2012 10:48 am ET

Liam Hemsworth Suits Up, Chris Hemsworth Hits The Gym (PHOTOS)

Liam Hemsworth walks around the set of his film Paranoia in a suit on Friday (December 14) in Philadelphia, Penn.

The day before, the 22-year-old actor was joined on set by his co-star Amber Heard to film scenes just days after he was reportedly involved in a brawl outside a bar.

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