The 11 Hottest Arm-Bra GIFs EverThe 11 Hottest Arm-Bra GIFs EverArm bra or hand bra? And what exactly is the difference? We'll explain, with the help of Emily Ratajkowski, Emmy Rossum, Nina Agdal, Kate Upton, Scarlett Johansson, Genevieve Morton and more.GuySpeed EditorsGuySpeed Editors