I bought my regular size thinking and it fits perfectly but the strap broke pulling it up. I would say size up just to have a little extra wiggle room

I wore this jumpsuit twice. it disintegrated by the 2nd wear, I have had it for 2 weeks. the strap broke the sides kept tearing I’m sad bc it’s a $60 jumper and super cute but it fell apart so easy. very cheap had to throw it away.