Evolution is completed in the Recipe Workshop. Certain wardrobe items can be evolved by gaining a specified quantity of the item and paying a cost in Gold to evolve the item to the next level. Evolvable wardrobe items will have one or two additional levels to be evolved, typically denoted as "Rare" or "Epic", though some items will have a new name for each evolution.
Most commonly, a quantity of six un-evolved items must be reached to evolve items to Rare, and then a quantity of four Rare items must be reached to evolve the item to Epic. For some pieces, different quantities are required in order to evolve items. For instance, only three Assassin Faith dresses need to be crafted in order to evolve Assassin Faith-Rare.
Evolvable items can be found as drops in certain Maiden and Princess level stages, randomly drawn through a Mystery House pavilion, purchased through the Association Store or the Clothes Store, crafted, reconstructed, or obtained by opening the Lost Casket.