Credit: Rex USA; Jennifer Graylock/; Jennifer Graylock/

High-concept (and sometimes high-fashion) costumes have long been a part of Lady Gaga's shtick, so it's no surprise that the star would step up her game during her ongoing Monster Ball tour. But we were still stunned to see the sheer number of out-there outfits Gaga has donned on stage this summer. The three crazy ensembles pictured above are a mere sampling: Click through to see Gaga's leopard-printed plastic bodysuit, her sparkler bra, and a bizarre flat-topped structure made entirely out of blonde hair.