Cosmetics are items that change the player's appearance when placed in cosmetic slots in the inventory. A new player starts with two default cosmetic items, a shirt and shoes, which will have colors chosen by the player for their clothing upon character creation. If you accidentally discard these items, you can buy them again from the Stylist, as well as a wig that matches your hairstyle.

Cosmetic slots in the inventory
Most cosmetic items can be purchased from the Traveling Merchant. The Stylist and the Farmer also sell cosmetics. Some cosmetic items are given by the Elder as settlement quests rewards.
Equipment such as armor placed in cosmetic slots does not provide any bonuses.
Alien Costume Set
Captains Set
Chicken Costume Set
Default Set
Elder Hat
Farmer Set
Frog Costume Set
Horse Costume Set
Hula Set
Jester Set
Plague Set
Pirate Set
Sailor Set
Snow Set
Spacesuit Set
Sunglasses
Surgical Mask
Swimsuit and Swim Trunks
Trapper Hat
Vulture Mask