Strapless bra become famous after coming shoulder less dresses in market because due to shoulder less dress bra strap visible and look not good. Strapless bra is that type of bra in which not strap use for shoulder. Some women says that strapless bra is not a good support for breast and not a very helpful to reduce breast movement is can be right and wrong. you think that what due you mean by this, the reason is selection of bra. A good brand of bra because a simple less quality bra not provide good support. A good strapless bra you can see in picture. some women and girls enjoy strapless bra because it give them a felling of freedom. Strapless bra is good for big breast because a woman how use normal bra for big breast and give a support by traps in this case all weight put on their shoulder and they feel pain around neck and should. If she use strapless bra for this can feel batter and comfortable. it is just consist of bra cup and one strap that hold bra from back side of body. Mostly women use it under shoulder less tops. Use full cup strapless bra for maximum support and good coverage.