Shop Spirit Halloween for official White Castle Costumes! Of course you love White Castle burgers, and now you can take your favorite food and turn it into a Halloween costume. These authentic costumes in the shape of White Castle sliders or chicken rings will make you look delicious down to the last detail. Whether you’re dressing up on your own or want to rock a group costume that’s even tastier, Spirit is ready to fulfill your craving for White Castle looks that are sure to be popular. Food costumes are always a surefire way to bring on the laughs. These White Castle outfits and merch are the perfect way to make this a funny holiday.