Old habits die hard.

When I moved out and into my own apartment, my parents knew better than to act as if they can come over and do what they want. I respected their belongings, they did the same. You need to sit down and have a talk with your mother and tell her she needs to be more respectful and considerate of you and your personal items. It's not her place or her property, therefore don't touch it!

Ground her. She's under your roof, and she has to follow your rules

Tell her she's grounded until she learns to act like an adult

how about speaking up 4 yourself?..! if you really are a grown up, than talk to her on that level and ask her : what she thinks she's doing there? and if she goes around throwing other people's clothes away?..hope you can let go of mommys apron someday..

If OP is gay, this was the time to come out to Mom and deal with the subject honestly and directly. Gay or not, OP has to set boundaries with Mom. Unless she agrees to respect those boundaries OP should've let Mom visit any more.

Put your clothes under lock and key

Lol are you ? If not at least she's lookin out for you

Well of course they are gay, they just hadn't come out of the closet yet.

I would just kick her out