Using this Harley Quinn costume is super easy. Just put on the two - tone jumpsuit first. Make sure the diamond prints on the sleeves and pants are visible. Then, attach the foam - backed collar around your neck. Next, put on the shaped foam eye mask using the elastic strap and wear the two - tone gloves. Finally, place the headpiece on your head. When it comes to care, hand - wash the jumpsuit in cold water with mild detergent and let it air dry. Avoid machine - washing to prevent damage to the diamond prints and frills. Store the costume in a cool, dry place to keep it in good condition. Also, be careful when putting on the headpiece to avoid bending the fools hat spikes. Have fun wearing this awesome Harley Quinn costume!