Jennifer Lawrence wears a black t-shirt with matching leggings while heading to the Gym in

Jennifer Lawrence showcases her toned legs in black leggings as she enjoys a weekend stroll in NYC

Jennifer Garner Works Out while she Goes to Pick Up her Son from School

Jennifer Lawrence wears a black t-shirt with matching leggings while heading to the Gym in New York City-020623_18

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Jennifer Lawrence wears backless black midi dress in NYC

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Jennifer Lawrence showcases her toned legs in black leggings as she enjoys a weekend stroll in NYC

Jennifer Lawrence wearing workout clothes as she talks on her cell phone Los Angeles, California - 21.06.12 Stock Photo - Alamy

Jennifer Lawrence's workout routine + diet: 12 things we know

Kim Kardashian shows off her slim waistline in a cropped tank top and camo pants while

Hilary Duff sports a black top and leggings as she heads to the gym for her mid-day workout session in Studio City, California

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