Vintage romper pink ruffle polka dot sz 12-18 M?

Adorable vintage romper/onepiece Short romper Pink and white Polka dot Large white lacy collar Burton up in back. Ruffled No brand and tag is worn out. Size: 12-18 M is my guess based on measurements Measurements: laid flat not doubled Bust: 10" Length: 16" Inseam: 2.5" Condition: very good overall, however elastic has gone out in legs and arms.