I have narrow, sloping shoulders and find that my bra straps slip off. I've tried the racerback adaptors that you attach onto the straps but I don't like them. These are supposedly properly fitted bras, and not at all cheap. I've found that ill-fitting M&S bras have straps that stay in place, but they give me four boobs
Is there anything I could stick on to the straps to keep them in place? I am happy with the overall fit of the bras but I can't keep going round hoiking my bra straps up every 30 seconds.