I also recommend Akabur games.
I think most
Trainer and
Adventure/RPG tagged games have some sort of wardrobe. Here's a couple I know:
I'm personally not a fan of HTML games since most of them disappointed me, but I liked these ones:
I've tried to look at your
other posts to learn a bit about your interests. Unfortunately, I'm more experimented with Male Protagonist games, but I try to keep in mind the ones that have both sides. Here are some sandbox/open world:
I might be totally off the chart with your interests, but I thought of adding more just in case something attract your eye.