I haven't worn a non-wired bra for over 40 years as due to my shape they just move around on me and give me that mono breast look. However, this sleep bra is so comfortable, stays put and somehow still gives me a good shape. I bought my usual 36E (navy) and also a 34FF as some reviewers have suggested that the band is generous. I found my usual size fitted really well on the outside hooks and did not need to go down a size - no problems with the band moving about or the back riding up. In comparison, although I could do the 34 up and the cups fitted, it felt somewhat constricting and uncomfortable - not what you want in a sleep bra. I am so pleased with this bra that I have today ordered the grey marl bra.