Authentic vintage sewing patterns: This is a fabulous original dress making pattern, not a copy. Because the sewing patterns are vintage and pre owned, we check each vintage sewing pattern for completeness, for the pattern pieces and the instruction sheet. Please keep in mind these are vintage patterns that may show their age not perfect in appearance but still very usable. In many cases the vintage patterns have never been used and are uncut and factory folded.
Pattern by Simplicity
Pattern Number # 6658
Copyright 1970s
The pattern is: Complete
Size:   12  Bust:  34   Hip: 36
Simplicity 6658; ©1974; Junior Petites' and Misses' Dress in Two Lengths and Unlined Jacket … Young Contemporary Fashion: "The short or ankle length halter dress with bodice front softly gathered to midriff has V shaped neckline, back zipper and flared skirt. The unlined jacket with bodice front gathered to lower band has band extensions tied in front, shawl type collar, long set-in sleeves, and optional fur trim

Love the design, but not the size? These sites will help you with resizing :
https://www.sovintagepatterns.com/blog.asp

http://sensibility.com/blog/tips/how-to-resize-a-pattern/