There are many costume designs and styles based on this colorful character. For comic book fans and cosplayers who love Harley Quinn and all of her stylish colorful outfits, we compiled a helpful list of costume ideas featuring the best Harley Quinn costumes for 2022! In Batman: Arkham Asylum, Harley Quinn’s outfit changed dramatically. The 63-year-old actress wearing a magenta colored outfit told Jimmy that she was going to be officiating her transgender daughter Ruby’s wedding dressed as Jaina Proudmoore, a popular character on World of Warcraft.