Me, personally, if a guy bought me clothes I'd think he was a fucking weirdo. I'm not a doll he can dress as he pleases, and unless you literally work in the fashion industry or have amazing style yourself, I wouldn't take a man's advice on style anyway. It's pretty well known men haven't a clue what women want in underwear (tip: comfort, not lace) or clothing (tip: flattering, not revealing.)
OK, so you've bought her clothes before and sometimes it's not been well-received. Take the hint! It's creepy. Maybe you come from a culture where men buy the women's clothes so they can always be dressed to your 'standards'. Whatever the reason, stop it. It's weird. She's an independent human being, not a baby that needs its outfits bought on its behalf.
Being given clothes by someone else is them basically saying "I want you to look like this." So you've given her things that have made her feel bad about herself, because a) they're tight and revealing, and that isn't who she is and she is upset you think she should wear such stuff, b) they're massive and baggy, and that isn't who she is either, so she's upset you think she has to wear such stuff, c) the items are too young or too old, and she's upset because you apparently don't know how old she is, d) they're completely wrong, stylistically, and she's upset you don't seem to know her style, e) they're over-the-top 'sexy' and you've basically slapped down some stuff and demanded 'be sexier', which is upsetting.
Frankly, it's controlling. It's saying "these are the things I think you should wear" and that the things she buys herself and likes are 'wrong' somehow.
And yes. Your relationship is clearly in a bad place and you just made it worse. She doesn't have 'a perception' that you're controlling her, you just chucked down a bunch of bloody lingerie and PROVED it. Icky.
But that's pretty par for the course. If any relationship is in a bad place - one person's feelings are hurt, one person feels alone or scared or bullied - then buying shit isn't going to help.
Another tip. If she says you're controlling, why not, OOOH, stop telling her how to dress?