Vintage Knitted Girl's Romper

This looks straight out of the 50s or 60s, but unfortunately, I do not know exactly when it was made. Is one piece, with two buttons at each shoulder - no snaps or buttons at the crotch. Design has light blue flowers on the front with light pink edging around the neck and shoulders. Light pink string tie at the waist. Floral design is only on the front - see last picture for a look at the back. No label, so I don't know the material used but it is made from a light weight yarn that washes well. I did not put it in the dryer but air dried it. Hanger is NOT included. Measurements lying flat are: Top of shoulder to bottom of leg opening - about 13.5 inches Crotch to bottom of V neck - about 11 inches Width at waist, about 7.5 inches