I can't stand the way my girlfriend dresses, what should I do?

To cut to the chase she doesn't wear extremely revealing clothes. Most of the time she wears very tight and pretty short shorts and small crop tops. Other times she wears tshirts with more than enough cleavage. Her shorts are tight to the point you can see her underwear extremely clearly and short to the point when she walks you can almost see her ass. Her cleavage doesn't leave much to the imagination. So I know that all these are not extremely revealing but I don't know.. Sometimes it's too much for me. I get very stressed out and immensely sad whenever she goes out without me. I just can't shake off the thought of guys looking at her and sexualizing her and having thoughts about her. It's not that I don't trust her because I trust her completely. It's just I hate this thought to the point of whenever I think of it I just get brought down. Makes me wanna cry and it's affecting me and our relationship. What should I do?

TL;DR:Girlfriend dresses kind of provocatively. Can't come to peace with the thought of others staring at her and is affecting me and the relationship.
I can't stand the way my girlfriend dresses, what should I do?
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