I do a lot of online shopping so I try to make sure I read the reviews and cross-reference the manufacturer's size guidelines to try to get an awesome fit. It seems to be a shot in the dark but in this case, it paid off and I have a super cute shirt! For reference, I'm a M in women's, L in Juniors. I ordered this in an XL.

The fabric is stretchy so it's forgiving while still hugging all the right places. The front is sequined while the back isn't but it's lined in the back to help smooth any bulges from your bra or a few too many adult beverages while out enjoying yourself. The sequins were attached well--I didn't notice any trying to run for their freedom, and it's not scratchy under the arms like some of the other sequined dresses I've ordered.