These might be cute to wear under pajamas, or even as a pajama top if it's really hot out. It could also be a good alternative if you were going to go bra-less but want a thin colorful strap to show through or under your top, but definitely not good as a bra unless you're an A cup, etc. There's no support or lining of any kind and there's stitching running through the inside of the cup. The fabric is nice and colors are great.  I love American Apparel, but these were a no-go.