https://www.gamespot.com/articles/super-mario-odyssey-amiibo-costume-guide-what-each/1100-6454442/

Super Mario Odyssey is a huge, wonderfully designed game brimming with personality. Although it doesn't specifically impact gameplay (for the most part), one new thing it introduces is the ability to dress Mario up in a wide variety of costumes. These range from his wedding outfit to Waluigi's overalls and many others.