Demi-cup bra offers a sensuous, cleavage enhancing shape. This style is best for petite to average figure women. These bras offer less coverage than a full cup and more than a balconette. Demi bras cover approximately half to ¾ of the breast, and will create you cleavage and uplift. If it seems like you're "spilling out" of your demi-cup it's probably the wrong style or cup size for you.