Nursing bra for large breasts?

I boobs haven't actually grown at all, but for some reason my back fat has! Grrr. I do not do bras without some padding and underwire. My favorite brand is Soma but they stop at a 44 and while I can wear a 44 is most brands theirs fits like a 42. Right now I need any bra but figured I should go ahead and invest in a nursing bra. I do not like one Bryant bras because they fall apart quickly for me. Sooooo any suggestions?!