I have a very large bust, a small waist and ribcage, and a short torso (particularly from my shoulders to my bust).  Consequently, I have a lot of trouble finding leotards that both fit me and also allow for a bra underneath.  This is a very basic leotard, but it works great.  It's thicker than other basic leotards I've had, but it isn't hot.  The neckline in front and back is high enough for modesty but low enough to be flattering.  I picked the size based on the size chart, and it fits perfectly.  I loved it so much the first time I wore it that I immediately bought a second one.