This is a really great dress that calls back to a casual look of the 50s.

I'm judging it to be 70s, possibly 80s based on the tag.
It's in very good condition, just appears to be missing it's original belt.

Tagged a size 8P and true to size 8, although I am 5 foot 4 and wouldn't necessarily say this is a Petite cut.

Shown on a size 4/6, and this definitely fits like a perfect 8.

Detailed measurements:

Bust - 38 inches
Waist - 28 inches
Hip - 40 inches
Body Length - 39 inches

This item is sold from a vintage seller in Central Wisconsin.