Saw this on Instagram first and fell in love. Could have gotten away with a size small instead. I Prefer things to fit a bit tighter when it has a stretch to it. If you want it to fit more fitting I'd size down. if you like room for the stretch, then get your regular size.
I'm 5'6 waist: 29-31 / Hips: 40-41 / Bust 34-36 Weight: 147-150