Adorable 1950s playsuit by Rose Marie Reid of California with the original belt.

Playsuit features steel boning at the bust and on the zipper, shirring on the back, adjustable straps, and lining in the bust. Belt is fully adjustable and has a (I believe) a lucite buckle.

Measurements:
Bust~36 inches. I would say 38 inches absolute max.
Waist~28 inches
Hip~42 inches
Length~10.25 inches center bust to waist seam. 14.25 inches from waist seam to crotch. 24.5 inches total length from center bust.
Straps~14 inches to first button hole. 19 inches to last button hole.
Belt~33 inches

In good condition. Elastic is good and stretchy. There is a very faint stain on the back of one of the legs. It's more visible from the inside and I got it the most of the way out but the last little bit was being stubborn for me. I also mended a frayed bit on the neckline and it is a less than invisible mend.

This item is sold from a vintage boutique in Phoenix, Arizona.