Super Mario Bros. cast trick Jack Black into wearing Bowser costume | EW.com
Amazon.com: Disguise Bowser Costume for Kids, Official Nintendo Super Mario Bros Bowser Outfit , Child Size Extra Small (3T-4T) : Clothing, Shoes & Jewelry
Disguise Bowser Deluxe Costume, Large (10-12)
Adult Bowser Kit
Super Mario Bros: Bowser Deluxe Child Costume - Walmart.com
Super Mario Bros. Bowser Boy's Halloween Fancy-Dress Costume for Child, One Size - Walmart.com