The Doll Costume is a retired costume introduced in Account Upgrades. It replaced the Pilgrim Costume in November 2017 as it and the holiday it was based on were 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 woman from the 19th century. Doll pets wear dresses held up by a crinoline, with a feather hat, and an umbrella or fan. They also have rings on their limbs and tails to look more "doll-like".

Belle is the Doll Rusty's spitting image.