Simplicity 9577; ©1971; Simple-To-Sew Misses' Mini-Dress or Tunic, Bolero and Pants ... Young Contemporary Fashion: The mini-dress or tunic with back zipper has high round neckline, bias roll collar, set-in sleeves and optional purchased belt. The mini-dress has short sleeves. The tunic has long sleeves. The lined bolero may be fastened with lacing and eyelets or trimmed with nail heads. The pants have elastic waistline casing.