Plus size Halloween costume ideas: Cosmo and Wanda Items you'll need for Cosmo: Black pants, white button-front shirt, black tie, green temporary hair dye/spray, black shoes, and wings, crown, and wand set (Amazon) Items you'll need for Wanda: Black pants, yellow top, pink temporary hair dye/spray, black shoes, and wings, crown, and wand set (Amazon) #LTKHalloween #LTKcurves