I really like this and am so glad I tried it (in the sale!) I usually wear 14SC but 14RS wasn't available so I tried a 16RS. It fits pretty much perfectly - I don't like anything clingy (as I'm no longer slim!) and the 16 just skims my body without clinging (although I had to take care to wear the right knickers!) I left the waist tie a bit loose so it didn't draw attention to my stomach and it worked really well. The only thing I would change is to make the shoulder ties 'proper' so you can adjust them for your height/or changes in bust size. I'm 5'4" and 32JJ/K and it's just about OK. And it's a tad long (I prefer just under the knee) but could be easily taken up if necessary (I don't think I'll bother though, the side split helps) I wore this recently to meet a friend (in a socially-distanced open space!), with a new Penny bra (Candy Bliss shape) underneath - and she immediately asked me if I'd lost weight! I haven't but I think the lifted shape from the bra, coupled with the slimming effect of this dress, gave that impression! Needless to say I'm pleased with this dress!