Minnie's trademark outfit is red with white polka dots, usually revealing her white bloomers with a large matching bow and oversized high-heel pumps that all are one color (depending on the cartoon). Like Mickey and Goofy, Minnie also wears white gloves for fashion. In earlier cartoons, she wore a pillbox hat with a flower in place of her bow. In some cartoons, Minnie wore only a skirt, a bow, bloomers, and her oversized high heels.

Source: Fandom