The patterns for this Butterick B6680 Copyright McCALL’S® Company, NY pattern are:

DRESS (WOMEN'S): A, B, C form-fitting dress with side gathers, neckline and armhole bands, and slightly flared hem in three lengths. A: Above the knee. B: Below the knee. C: Ankle length. N.B. No provisions for adjustment above the waist.
You can use materials such as:
FABRICS: Medium stretch knit (35% in width): Jersey, Interlock, Cotton Jersey, Rayon Jersey. Large diagonals will not fit. *With Sens.

Size guides can be found in “affiliations”