Big Girls' Wilma Flintstone Costume - S This kids Wilma Flintstone costume includes a white dress, headpiece and necklace. Our kids Wilma Flintstone costume comes in child sizes Medium, Small, Large. This kids Wilma Flintstone costume is an officially licensed The Flintstones costume. Please note: This item's color may vary due to inherent manufacturing variations or your computer monitor's color settings. The item you receive will be identical or substantially similar to the item pictured in this listing.