The Doll Costume is Rarity 29 and it can only be obtained from the Account Upgrades. It replaced the Pilgrim Costume as it was starting to lack in popularity. The Pilgrim Addow, Arinya, Crindol, Echlin, Fasoro, Gonk, Kujo, Snookle and Zoink have been updated. If you have one of these pets, they have now turned into Doll pets. If your pet is wearing this costume, they will dress like a Southern belle.