Addressing Issues with Bra Straps - as part of the women's style series on clothing and fashion by GeoBeats. A lot of women come to me and want to know why their bra straps always fall off their shoulder. There is a couple of different reasons why that happens. Number one, the straps might not be adjusted enough. So you need to look at your strap and make sure that it is adjusted enough. Number two, the bra might just be old, and so the straps cannot support you any more and so they fall off your shoulder. Number three, the bra may be too big. And so if the bra is too big, the entire bra moves away from your body and therefore the straps also fall off your shoulder. Another reason could be that you have petite shoulders, that they are not really broad. So if you buy a bra where the strap is out farther, more like a French strap, it is going to constantly fall off your shoulder. So you want to make sure you get a strap that is cut in more. So, there as a lot of different reasons why a bra strap may fall off your shoulder.