What should a 22 year old female wear?

I am turning 22 this week and I want to start looking and acting more my age. I struggle with looking my age since I am extremely petite, I am 4'11, and naturally look younger for my age. I am a college student, I am working for a Bachelors in Accounting, I am a church leader and in a relationship with a great guy.

I normally wear more vintage, bohemian, kind of hippie style but can be preppy.

What stores should I look into? (I do shop at forever 21, H&M, American Eagle)
and what style of clothes?
Any suggestions on make up and hair even? (I have long, naturally curly hair, I don't normally wear very much make up besides eyeliner and mascara)
What should a 22 year old female wear?
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