Okay... so I know that this dress fits people differently.  LMJS, this dress is downright sexy.  I can't take my eyes of my wife.  It's not that short.  For some reason, the package said it was a shirt or a top.  But it wasn't short at all.  For reference, my wife is just over 5 ft tall and bought a small.  We were expecting something a little shorter becaus her legs are her greatest assets.  The fabric is super soft. It's thin, but so far it's not see through.  We've only used it around the house, haven't gone outside with it.  But something tells me that under the right lighting conditions, you'd be able to make out her silhouette under the dress.  There doesn't seem to be as much side boob action going on (sorry for me) like the model,  but I think that'll depend on the girth of your chest and the size of your breasts.  Don't think however, she could go out without a bra.  That being said, I think it might look a little awkward if she wore a strapless bra because of the way it's cut in the back.  So, if you do decide to go out with it, my suggestion is to put on a sweater or something so that the appearance of wearing nothing is not an issue or the bra won't show.