I am not usually a 't-shirt and jeans' person, but there are some days (especially when it is 90 out) when tee shirts or tank tops are really the only way to go...
I like this one from
Chocosho (plus it's on sale!)
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I buy a LOT of my summer tee shirts from
Heavy Rotation, (if you like tees but are not familiar with them, check them out-they pretty much built their name on tee shirts) a
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nd recently bought these two-
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I especially like the witty trompe- l'oeil effect on the shoelace shirt- cute!