Known for her outrageous style, Lady Gaga surprised onlookers at LAX airport when she opted out of wearing the bottom half of her outfit. Sporting nothing more than a black leather jacket over a black bra and thong, her derriere was almost entirely exposed, albeit the sheer black tights (barely) give her coverage. But Gaga’s not the only one to forgo this wardrobe staple: From Katy Perry to Rihanna, see more stars who opted out of wearing pants.