I weigh about 145 and am 5’ 8”. I ordered a small and it fit great! It isn't restricting as it has stretch to it. I’m smaller chested so sizing down wasn’t an issue for me however if you’re blessed up top then I would recommend getting your regular size. It’s not see through either (at least in black) so that’s a huge plus for me

I absolutely love this 2pc so much that I ordered another set. The stretch is great. I was skeptical about the shirt from the pictures I’d seen but turns out it’s perfect. I order and extra large and I’m 5’6 220

The bottom was cute, but the top didn't flatter my body shape. still not a bad buy.