Butterick 6521; 1970s; Children's & Girls' Dress, Pants & Shorts. Loose-fitting front-buttoned smock dress has front and back yoke, round collar, full length sleeves gathered into buttoned cuff, and topstitch trim. With or without patch pockets. All self or bi-color combinations. Front-zippered, flared self or bi-color pants and shorts are darted into waistband. Topstitch trim.