Costume Supplies is a clothing store in Bikini Bottom where customers can buy costumes and clothing. It appears in the episode "Boating Buddies."
The exterior of the store includes pink metal walls. It also has three windows and glass double doors. It also has a large yellow sign at the top that reads the store's name and "Parking in Rear" in blue text.
The interior contains faded blue metal walls and a brown wooden floor.