Addressing Issues with Bra Bottoms - as part of the women's style series on clothing and fashion by GeoBeats. A lot of women ask me, what is going on, why do their breasts always fall out the bottom of their bra? Simple answer: their band is too big. Either their bra is completely worn out and their band is too big, or their bra is just too big. So what they need to do is size down in their band, and probably go up in the cup. If they have a place near them that can fit them properly, they should go in and get fitted professionally.