I wore the M&S post surgery sports bra for the first 3 weeks. Nice and tight, very supportive and easy to get on and off. Problem was I changed size in that time because of the swelling, so had to buy one a cup size smaller. At week 3 when my boobs had strated to drop into place it then began rubbing on my scars, so switched to a Macom signature bra. I’m a 32 and I’ve gone for the XS so that it feels supportive. Feels much less compressed than the M&S ones, but more comfortable on my scars now I’m at 4 weeks po.