Colette Patterns Parfait sewing pattern. From description:
A versatile dress designed to be worn as either a sundress or layered over a shirt or blouse as a pinafore style in cooler weather. Features a gathered bust and flattering curved midriff that fits snugly around the high waist. The straps and gathered pockets fasten with buttons. Skirt is a gently flared six gore style. Closes this with a side invisible zipper.