First date coming up, what do I wear?

Haven't been on a date in a couple of years, really nervous for this one. I've fluctuated from 80lbs-105lbs for a couple of years (currently 83lbs) and I'm 5'7.5'', I almost exclusively wear oversized clothing in public because people get weird about my appearance if I wear anything tighter, but that's probably not super appropriate for a restaurant, let alone a first date. I'm really nervous that they'll think I look weird and things get complicated between us and I'm not sure what to do about it. The restaurant we're meeting at isn't too fancy but it is a little bit, I've been before with family and I don't think a jacket and sweats would slide, would probably get some weird looks. I've still got a day to get my shit together but I want to make a good impression, what should I do?

First date coming up, what do I wear?
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