This is a lovely swim dress, the quality feels great and I love how light it is. I’ve had very heavy swim dresses before, they made swimming difficult. In this model, I bought size XXL, I have a 42 inch bust, typically US 12-14, it fit quite well. Not too tight on my butt or boobs, but not too loose. I would say size chart is accurate. One star off though for the built in bra, the fit was very odd, the bra came up too high so it was only covering half the breasts and was shifting around a lot. I saw a similar comment on another model, Lula dress I think, so maybe this is a design issue. I will likely cut it off, which is unfortunate since I didn’t want to wear a bra. But I’ll keep it because overall, the quality and modesty is quite worth it. I especially like the buttons on the side to fasten to the pants, will make the swimming experience great.