You will need 5(5, 5, 6, 6, 6) buttons. Sirdar used their button # B5611-0026.

You will need stitch holders.

Finished measurements:
Chest circumference: 18.5( 20, 21.25, 22, 22.75, 23.75)“ 47( 51, 54, 56, 58, 60) cm
Finished length: 9.75( 10.75, 11.75, 12.5, 13.5, 14)” 25( 27, 30, 32, 34, 36) cm
Sleeve to armhole: 6.25( 6.5, 7, 8, 8.75, 9.75)“ 16( 17, 18, 20, 22, 25) cm

Yarn used:
Sirdar Snuggly Cashmere Merino DK
A. Shade 471 Teal - 2 balls for all sizes
B. Shade 451 Cream - 2(2, 2, 3, 3, 3) balls