Simplicity #5785 - Misses' Dress Pattern - Uncut
Size 10 Bust 32 1/2" 
1973

Pattern is previously owned but uncut. Some aging and wear to envelope. Instructions are aged.

Approximate length of short dress is 34". The top-stitched dress V. 1 and 2 with back zipper, high round neckline and set-in sleeves has flared skirt with princess seaming stitched to bodice above normal waistline. Regular length v. 1 has long sleeves. Short length V. 2 has short sleeves.

From Wikipedia:
Princess seams are long rounded seams sewn into women's blouses or shirts to add shaping or a tailored fit to closely follow a woman's shape. They are a dart variation that is sewn into the front or back of a shirt that extends from the waist up to the shoulder seam or armscye. Princess seams are distinct from darts in that they form a continuous line and are a full seam. Darts, on the other hand, are folds sewn into the clothing to shape the resultant garment.
The princess seam style of dress needs no waistline since it does its shaping by joining edges of different curvature. The princess seam that extends from the shoulder (or under the arm) curving gently over the bust point and down to the lower hem creates a long, slimming look.