Hi @CathL , @Locksley and @lolasmum , I had a lumpectomy on my smaller breast so felt even more lop-sided. I found an online company that do a whole range of beautiful bras and have a very informative website for sizing, and for a prothesis if needed, they also do appointments online (video I think) for advice. Have a look at
https://www.erilan.com.au/They make a good range of pretty and comfortable front opening bras too, even front and back opening on the same bra. I know the prices may seem a little more than you may have spent on a bra before (it was for me) but after going through breast cancer you deserve a little luxury, if possibly only one bra at a time.
All the best
Rosie