How to Change Outfits
You can change your outfit by clicking A standing in front the mirror in your house. There aren’t many choices, mostly different colour variation of your existing outfit. Depending on the location you purchase your game (if you had it pre-ordered before release) you may have received special costumes like sheep costume, dog costume, cow costume and so on. If you didn’t, the Nintendo eShop has you covered: there’s paid DLC for the costumes too!