McCall's 7578 Vintage Sewing Pattern, dated 1981.
One piece bathing suits have elastic in upper edge and leg casings, and detachable strap buttoned to front. View A is twisted at upper front. View B same as A, has contrast. View C upper front is gathered into band and at sides; low cut back has buttoned strap. View D, same as C, has self fabric ruffle.
Sizes 10 - 12 - 14:
Bust 83 - 92 (32 1/2 - 36 inches)
Waist 64 - 71 cm (25 - 28 inches)
Hip 88 - 97 cm (34 1/2 - 38 inches).
Pattern is UNCUT and factory folded. Envelope is in good vintage condition.
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