I am usually a size 16 UK however I hold most of my weight in my stomach so I went with a 3Xl just to be safe. the dress is unreal it’s long so perfect for tall girls, I am 5,6 and will need it taken up a little and the slit opened more but it’s long enough so with heels it won’t look awkward. it hugs my waist nicely but also hides my stomach exactly how I wanted it to, the straps Arnt adjustable but they are stretchy so they sit nicely to, 10/10 would recommend however if I was a bigger size and wanted to hide my stomach this dress would be a little fitted. unreal dress it can easily be dressed up or down, the material is stretchy and super comforting too. I hope this helps xxx