Find and save ideas about Katy perry costume on Pinterest. | See more ideas about Katy perry outfits, Katy perry halloween and Katy perry dress. Katy Perry Costumes. Party Princess Halloween Costume, Ballet Dress, Party Outfit, Warrior Dash/ 5K Run. Product (products not sold by sucioent.com). Product Features Look for katy perry as katy-patra dark horse eagle costume, also by rubie's.