We're having a bit of a heatwave and it is definitely way too warm for pajama bottoms right now. But I suppose this cute set would work. Ever since last year I found I actually sleep better when I do have sleeves on. Strange, I know.
It has to get really warm for me to ditch the sleeves altogether, so this might just be perfect for most of the summer. Anyway, the set is available at ModCloth, but that should come as no surprise as it fits their style perfectly.