From the Knit Rowan website:
Knit this ladies short sleeved cable cardigan from Elegant Knits. Designed by Martin Storey using the wonderful yarn Pure Wool 4ply (wool), this knitting pattern is generously sized to fit up to 48 inch bust.

Finished chest width dimensions:
51.5: 58: 64 cm
20½: 22½: 25½ inches

Yarn Information:
Photographed in Eau de Nil 450
10, 11, 12 skeins
1740, 1914, 2088 yards