Simplicity 9284 vintage sewing pattern, dated 1974.

Misses' Blouse, Midriff Shirt and Hip-Hugger Bell-Bottom Pants: (Including a Tissue Lesson Chart ... "How To Fit Hip-Hugger Pants").

The blouse V. 1 and midriff shirt V. 2 with front button closing has shirt type collar and long set-in sleeves gathered to buttoned cuffs. V. 1 has patch pockets. V. 2 features front extensions tied under bustline exposing bare midriff. The hip-hugger, bell-bottom pants V. 1 & 2 without waistband have back zipper and optional purchased belt and braid and button trim. The pants are made to be worn 1" below normal waistline. 

Size  12:

Bust  34 inches/ 87 cm

Waist 25 1/2 inches / 65 cm

Hip    36 inches / 92 cm

Pattern is UNCUT and factory folded. Envelope is in good vintage condition.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s