Vintage Maggs Head Fit to flare Dress

This dress is just adorable Guessing it is from 60’s Metal back zipper Cute button details on front Size tag is not there nor is fabric tag 18” flat across pit to pit Cotton fabric Faced with red and white polka dot to match buttons Waist 13.5” flat across Hip 19” flat across 36.5” long from top of back Inside seems are the only place that shows wear Please see pic