Kim Stewart Shapes Up In Spandex

08/07/2013 09:52 am ET

Kim Stewart was seen working up a sweat after a session at celebrity favorite Tracy Anderson's gym Tuesday in Los Angeles.

The model and actress kept it simple in a black flowy tank and spandex, but toughened up her ensemble with a U.S. Army baseball hat and aviator sunglasses.

Could she be powering through some aggression over Harry Styles and British model Kara Rose Marshall?


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