Vintage Floral Fitted Belted Tea Length Party Cocktail Dress 50s 60s 70s

This cheerful vintage floral dress does not have brand tags, so I cannot completely place the era it is from. Based on style I would guess late 50's to early 60's. Remaining tag says Lot 11, Size 12. Measurements are in the photo, and I would estimate this to fit like a modern size 4. There is a hidden zipper in the back and as well as a functional belt. The hook and eye closure is missing the eye part, but does not affect the wearability of the dress. It is lined. Great addition to your vintage collection or for your next Mad Men party!