This chambray halter top is a good summer staple from cloth and stone, but, it is better for longer waists than mine (and, smaller busts). 
fyi: 36c, broad shoulders/back, short waist - normally i wear a m in c&s, and that is what i tried in this halter top.
oddly the overall length was okay, but the armholes were very low. in the m, the bust area was tighter than it should have been for a easy summer top. i think that this is due to the overall length of the bodice. in other words, the top ha