I actually had a clothing system before I first released the game, where your clothes would rip and tear as you got bigger. I ended up removing it because it didn't end up being that interesting - actually it was more annoying than anything because you grow quickly enough that they would just tear off constantly and you'd have to keep getting new clothes. If I ever think of a way to rework it I might add it back
I can see how annoying it would be to implement. Although there could be tailoring services. I do feel as though there should be a size limiter item in case you don't want to get too big. Though despite how goofy this world is I don't want to take away from the characters either. Since they make this game fun.