I'm a size 12, 38D and the 1X in this fits me perfectly. Of course, I need to wear a strapless bra under it. Out of all the corset tops from this line, this is the only one that has adjustable laces, so it can be cinch to loosen or tighten it in different areas (example, tighter around the waist, looser around the bust). Most don't realize these are JUNIOR sizes. If you're a plus in women's, this isn't going to work for you.