The long-underwear set is a dress-up item in Animal Crossing: New Horizons introduced in the 2.0 Free Update. The item can be worn by either the player or any villagers
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Animal Crossing: New Horizons - Animal Crossing Wiki - Nookipedia
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Glitches (New Horizons), Animal Crossing Wiki
Clothing - Animal Crossing Wiki - Nookipedia
Piper - Animal Crossing Wiki - Nookipedia
Fashion, Animal Crossing Wiki
Animal Crossing: New Horizons - Animal Crossing Wiki - Nookipedia
Culottes (New Horizons) - Animal Crossing Wiki - Nookipedia
Sally - Animal Crossing Wiki - Nookipedia
Furniture - Animal Crossing Wiki - Nookipedia
Sally - Animal Crossing Wiki - Nookipedia