This is a wonderful vintage McCall's 7482 cocktail dress sewing pattern from the 1960's. The sheath dress with camisole style bodice has 2 length options and the overblouse goes over the dress to make a whole different look. The overblouse is most dramatic when made in a sheer or semi sheer fabric, but it can be made in an opaque fabric as well.
Cut, complete pattern. Tears to envelope.
Remember that patterns can almost always be adapted to fit a range of sizes so if you find a pattern you love, but it isn't in your size, look at online tutorials to see how easy it can be to change a pattern size.