Great advice @primek. I just had a look at the Erilan store again and they have a lovely range. If you are a D cup or smaller, this site is great. The bras can be a bit expensive, but they have nice colours. I bought a few bras online and never wore them though because the cut wasn't quite right, but once I knew the style I liked I could buy them online. Have wasted so much money on bras, beanies, hats and scarves over the past few years!!
Having a bra fitted was the best way to find the perfect one and I found that my needs changed from lumpectomy, to mastectomy to recon, to reduction and a bit of weight loss in between! I usually stop wearing the surgical bras after a number of weeks and go back to my other bras, but haven't been able to go back to an underwire bra. This advice is from a larger person. LOL