Adorable Sunny Yellow Babydoll Set

Cute as a bug’s ear. Cotton. No tag. My guess is large but in vintage sizing, a medium with shoulders (I have none) could pull it off. The bloomer waist elastic is intact. I don’t think the leg openings were ever elastic on this set. Faint discoloration of the lace at far left near armpit but no issue on the opposite side. I’ll try to treat it and let you know.