McCalls Sewing Pattern M8603 Misses Dress with Hemline Variations.

Very loose-fitting flared dress has long sleeves with elastic hem, bias collar that ties in back, and back slit neck opening with hook and eye closure. View A dress has high low hem. View C dress has tiered bottom. All views are above ankle length at center back.

Fabric suggestions

Challis, Charmeuse, Crepe de Chine, Gauze.