Vintage Light Blue Pleated Midi Dress

Vintage light blue dress with an empire waist and pleated skirt. Unsure what time period it is from as it was purchased from a vintage shop, but likely 60s or 70s. Size is listed as a 7, fits around a modern size 2. More measurements can be posted upon request! I am 5”3 for reference. Clasp on the back is broken, shown in last photo. The zipper still stays up without the clasp but it could also be replaced.