I'm very tall (6'3") and have a long torso, so I usually have trouble with one piece of lingerie like this. But the fabric is nice and stretchy so it fits very well.
I got the size Medium and it fits perfectly. I am 5'4", 130-135 lbs, measurements 37"-29"-39".
With good elasticity
Medium fits this girl perfectly.
The biggest feature of the teddy isbuilt-in bra pads.
They can help hold and fasten your boobs, give youa sense of safety,push up your breast, and modify your body shape.
Bra Pad Teddy
With good elasticity, if you are a slim girl, can totally choose a size down.