Twinset pattern also includes instructions for the matching cardigan, Ravelry entry here.

Summary
A close fitting ribbed jumper with short sleeves

Size
Bust 34” to 36”; length 18.5”; sleeve seam 5”

Gauge
7 stitches to 1 inch using 3.75mm US 5 needles over stocking stitch

Materials
8 oz Sirdar Majestic Wool 3-ply