hope you don't mind my comments on the subject of bras. I had lymphodema of my breast 3 months after radiotherapy...I was advised to wear a sports bra which has been really comfortable with good support..no seams or ...which meant I was comfortable wearing it for longer periods each day
I think that as long as it is a compression bra it will do the job of keeping everything in shape and minimising bruising/scarring problems. I found the Royce bras a bit of a problem as they're not really designed for larger bust sizes and the compression is very strong (a lot like wearing an elastic band on top of wounds - ouch) but they might be OK for smaller cup sizes. The Macon bras will fit any cup size and the compression isn't so strong so they are more comfortable to wear.
I think some of the smaller ladies have been able to get by just with normal nursing bras which you can get in Sainsbury's, Asda etc (I'm told Debenhams do a pack of 2 for about £18 pounds which are very good)
Hope that helps