In Super Mario Odyssey, one of the items Bowser steals is the Binding Band, a hugely oversized ring. He steals it from the Sand Kingdom, so pretty early on. The main question is based on endgame and postgame content, hence the spoiler:
At the end of the game, Bowser struggles to get it onto Peach, and it seems to be at least her full height. Yet shortly after, when you actually fight Bowser, it’s very snugly around Peach’s waist. Finally, when the ring is returned to its spot in the Sand Kingdom, it seems to be almost twice Mario’s height.
So in all three of those instances, the Binding Band varies in size. Is there any in-game explanation that I missed that explains this? Or is it an oversight in the design process?