Loose-fitting, straight jumper, lower calf, has low armholes.
B: side slits. Loose fitting, pullover top has extended shoulders, back zipper, long sleeved. Loose-fitting blouse has collar, collar band, detachable jabot  with pleats tucks (wrong side shows), extended shoulders, long sleeves with elastic forming ruffle. Semi-fitted, straight skirt, lower calf or straight-legged pants have waistband, back zipper.
C: back slit. 
You buy the fabrics, the thread and the buttons.
FABRICS: A,B, Top, Blouse, Jabot, C, D: Faille, Challis, Crepe.
Jumper Pants: Light weight double knit; for blouse jabot, crêpe de Chine, Gauze. Unsuitable for obvious diagonals.

The price is for two of those models.