Butterick 4001 vintage sewing pattern, dated 1986. 

Misses' Top and Skirt top has loose fitting blouson bodice, elastic waist flare peplum, back button closing and long sleeve, straight skirt below mid knee or evening length has elastic waist and back hemline slit, Purchased Belt

Size    12 14 16:

Bust    34 36 38 inches /  87 92 97 cm

Waist  26 1/2 28 30 inches / 67 71 76 cm

Hip     36  38 40 inches / 92 97 102 cm

Pattern is uncut and factory folded. Envelope is in very good vintage condition.

More 80s patterns here:

https://allthepreciousthings.com.au/collections/1980s