Are raglans and crop tops slutty looking, in your opinion?

Today my friend and I were walking through campus. I was wearing a raglan: link My friend was wearing a crop top: link

We walked past the frat house where a bunch of guys were sitting on the lawn. As we walked by they started saying "*cough*SLUTS*cough*WHORES" as a collective group.

I didn't see anything inappropriate with our outfits. We were both wearing jeans and sneakers, so I would have considered us as showing only a little skin.
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In case it comes up again, both my friend and I were wearing bras and have small chests. I don't know any of the frat boys personally, and I don't think my friend does either.
Are raglans and crop tops slutty looking, in your opinion?
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