My mayor's go-to outfit is a crown, ballet dress (or some sort of pink qr code dress), white stockings, ballet shoes, and a Peach Parasol. it's changed a lot over time, from it starting as a pink hairpin, pink slip ons and a pink qr code dress, from Princess Peach cosplay with a crown, Parasol, qr code dress, and ballet shoes, to what it is now, which I think will be her final look, although I might change it a little or cosplay as Peach again for Halloween or something.
Stella's go-to outfit is a blue ribbon, blue galaxy sefiku qr code, white stockings, and blue flats.
She also sometimes wears a purple variation, with a purple violet, purple Galaxy sefiku qr code, and purple flats.
Angie's outfit is a NTDO red cap, black square framed glasses, a C letter jacket (Why's there no A one Nintendo ;-

and red sneakers. It pretty much never changes.
Keiran's outfit is a gray parka, jeans (are jeans in this game?) and some sort of gray sneakers. It never changes either.