Hailey Bieber rocks a black leather jacket and leggings while

rachel brosnahan attends the cnn heroes- an all star tribute at the american museum of natural history in new york city-111222_1

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hilary duff flaunts her curves in a workout top and leggings during a workout session at a gym in los angeles-060821_17

hilary duff looks fabulous in a black strapless top while attending ireland baldwin's baby shower in hollywood, california-070323_7

kendall jenner looks chic in mint green during a dinner outing with a friend at giorgio baldi in santa monica, california-021222_17

hailey bieber rocks a black leather jacket and leggings while heading for a meeting in los angeles-051021_9

nicole scherzinger attends jennifer klein's day of indulgence holiday party in brentwood, california-031222_6

Hailey Bieber rocks a leather coat and flared pants as she steps out during Paris Fashion Week in Paris, France

jennifer lawrence at the premiere of faces places at the pacific design center in west hollywood-111017_7

Emily Ratajkowski flashes her taut midriff in a crop top paired with a black overcoat while out for lunch with Adwoa Aboah in New York City-121223_13

Rita Ora shows off her toned physique in a green unitard while stepping out in SoHo, New York City-240423_12

scarlett johansson sports a white tank top and black leggings while picking up lunch in the hamptons, new york-150822_5

lottie moss and mimi bouchard grab lunch at cafe in london-311017_6

hailey bieber rocks a black leather jacket and leggings while heading for a meeting in los angeles-051021_23