It is modeled by the gorgeous Shelley Hack:
This style is almost exactly the same as a store-purchased dress I had back then.
Mine was yellow calico, and I think it finally fell apart because I wore it so much!
I loved it.
(I have a picture someplace - if I find it, I will add it here later on.)
Here is the front to of the pattern:
We have Simplicity number 9366: