Depending on the material and cut, the slip dress may end up looking a bit more put-together, and even nighttime-y and a little less casual. However, we love any summer dress where all you have to do is slip it on and go — which is why the cami-top frock is not to be overlooked this season. Reformation consistently offers lightweight slip dresses with a sexy detail (like a thigh-high slit) while Quince is a stellar source for a more low-key, but equally chic, spaghetti-strap affair.