If it's labeled a "sleeveless jersey" rather than a "tank," it probably doesn't have a shelf bra in it.
(For this A cup, shelf bras are nice for swimsuits, Yoga and hanging out, but not for anything that involves bouncing or rapid movement, cycling included...)
Speed comes from what you put behind you. - Judi Ketteler
+1 on Moving Comfort! I have a bunch of their Cara bras- supportive enough to run in, and no uni-boob.
Road Runner Sports has "support tanks" in C & D cup sizes, I believe. Their Powertek Bra top C/D, Fitness Bra top C/D , and Intensity Tank Bra top all have "molded cup" bras.
http://www.roadrunnersports.com/rrs/...&AnswerID=1542