Darling jumpsuit from Millibon in a pretty black and white print. Size Large. It has POCKETS!!! Bodice is really stretchy so its super comfy to wear, the pants portion thogh is only a teeny bit stretchy. I don't see a contents tag but it feels like a soft cotton or blend.
Excellent preowned condition. Maybe a bit of overstretching on the shoulder straps? I'm being really picky.

Armpit to armpit across bust all round is: 26" up to about 45"
Waist all round is 26" up to about 45" (at bottom of stretchy top)
Shoulder to waist is 15.5"
Shoulder to bottom hem is 52"
Crotch seam to waist is 17"