In case you haven't heard, Lady Gaga is Harley Quinn in Joker ... wore an black minidress with a dainty blue floral print. The dress had an elastic waist, and featured an exaggerated lace collar ...

Lady Gaga unleashes "Harlequin ... in a shower while wearing a clearly damp white dress that reveals her underwear. The pop star also sported "Harley Quinn"-inspired hair and makeup, a clear ...