I'm an E cup when feeding, I had a fantastic lovable brand feeding bra that I would wear to play basketball with an extra aerobic crop top to add extra support. I always found that to be adequate support. The feeding bra had really high release hooks (the feeding clips if that makes sense), apparently the higher they are the more support the bra can give, they were almost at the top of my shoulders. Its a good quality one too, I bought it when feeding DS2 3 years ago and am still using it now for DD.