I usually choose a size between 4x and 5x. I wear tank tops 4 times and everything I want to wear a little looser 5 times. I've seen people say it's a bit small and I wanted it to be loose fitting like a Hawaiian shirt. So I ordered 6X and it barely fits. it fits like I expected 4X to fit. not at all loose and clumsy. feels almost like a sports uniform. it said. I love the design and have had many compliments on my party shirt. So if you're plus size, order at least one size up, maybe two. In addition, the material is thin, smooth polyester. don't expect it to breathe like silk or even rayon. In winter it is not so important, but if it matters.