I ordered the black tube bra top and it fits just right.  Im a 38C, size L top.  Im wearing over a bra under dresses that crisscross in the front and its like a modesty panel.  Stays in place and gives good coverage.  Easiest to pull it up from your feet over your hips.  The fabric is not too thin.  I like it.  It does what I need it to do.