Butterick 6420 vintage sewing pattern, dated 1992. 

Misses'/Misses' Petite Pants, View A Pull-On.

Close-fitting, tapered pants A have elastic waist and stirrup.  Pants B, C, D, E have waistband, side front pockets and mock fly zipper. B and C: carriers. C and E: cuffs. D and E: front pleats. Purchased top and belt. 

Size   18 - 20 - 22:

Waist 32 - 34 - 37 inches / 81 - 87 - 94 cm

Hips   42 - 44 - 46 inches /  107 - 112 - 117 cm

Pattern is UNCUT and factory folded. Pattern envelope is in good vintage condition, with some light spotting.

More 90s patterns here:

https://allthepreciousthings.com.au/collections/1990s?page=1