Think they only say to go larger due to swelling…. Ask your nurse at the pre op she will have the best idea. … Tbh I’m not bothering with the Macom bras as after the op I can’t see me wearing them ever again, I’ve instead got a shock absorber ultimate run bra, they give really good support and have no seems inside so perfect for healing. … Best to go in and get your back sized and fitted for this then just go up to your predicted cup size … They have a bit of room for stretching during swelling if needed.
Shock absorber and m&s also do zip up ones which are good as easy to do up.