@SouffleGirl123 hairstylist would probably be another minor. I didn't think about that one xD
Fashion is the mother, make up and hair are the babies. I can make an exception for you to have two minors. The school probably designed your character's classes in a "make your own major" style where it encompasses all three.
But keep in mind, the fashion program will be demanding. She'll learn the business of fashion and everything that the industry has to offer. And we all know the fashion industry is cut throat.
I don't want her to be amazing at all three things. Give her a focus since this is a specialization school