Kwik Sew 1336 Vintage Sewing Pattern, dated 1979. 

Misses' Bikini.

Bikini swimsuit in two styles. View A swimsuit is gathered at center front with tie halter straps. Panties are gathered at sides with drawstring in casing that tie at leg opening. View B has a V-neckline, gathers at front side seams, shoulder straps that tie at back neckline, and hip hugger panties. Both views have elastic at all outside edges.

Size 6 8 10:

Bust 32 1/2 - 35 1/2 inches (83 - 90 cm)

Hip 34 - 37 Inches (86 - 94 cm)

Pattern is uncut and factory folded. Envelope has some spotting , wear and tear around flap.

More swimsuit patterns here:

https://allthepreciousthings.com.au/collections/swimwear