From Fashion Patterns by Coni:
This pattern enables an aspiring designer to have their own Armhole Princess Pattern with the bust cup and shoulder fit everyone has been looking for.
Available for sizes 8-20 or 1X-6X.
Cup sizes available: A/B, C/D/DD(E),(DDD)F/G, H/I.
When using this armhole princess pattern, you can create your own princess blouses, vests, jackets, dresses, or formal gowns. By interchanging or adding different collars, plackets, pockets, sleeves, or changing the neckline, you can become your own designer and have correct fit every time.