Quote Originally Posted by Unregistered View Post
If you buy an outfit with lust, does the outfit unlock for every girl or only that specific one?
Yep. If you buy an outfit with lust, (or get via gatcha, or as an achievement reward*, or reward from event) it unlocks for all the girls.


*Speaking of, the achievement reward for waifu status for each girl is that girls "default" outfit, which unlocks it for all the other girls, (get lust for whatever pieces you may have already obtained via gatcha/lust)