The athletic outfit 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
Poncho, Animal Crossing Wiki
Billy, Animal Crossing Wiki
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Shino From Nookipedia, the Animal Crossing wiki New Horizons willoger Shino is an unreleased deer villager
Athletic outfit (New Horizons) - Animal Crossing Wiki - Nookipedia
Blanche - Animal Crossing Wiki - Nookipedia
Animal Crossing: New Horizons — StrategyWiki
Diva, Animal Crossing Wiki
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Athletic outfit - Pink, Animal Crossing (ACNH)
Animal Crossing (universe) - SmashWiki, the Super Smash Bros. wiki
Lolly finally coordinated this outfit I gave her two months ago, please clap : r/AnimalCrossing
Buck, Animal Crossing Wiki