You will also need a size US 5 (3.75 mm) at least 40( 48, 56, 64, 72)“ 100( 120, 140, 160, 180) cm

Finished measurements:
Circumference at lower edge: 47.5( 55, 62.5, 70, 75.75)“ 120.5( 139.5, 159, 178, 192.5) cm
Length (excluding neckband): 12( 13.5, 15.25, 15.25, 16.75)” 30.5( 34.5, 38.5, 38.5, 42.5) cm

Yarn used:
Rowan Summerlite DK and Kidsilk Haze
A. SDK 476 Duckling - 3(4, 5, 6, 7) balls
B. 666 Alhambra - 1 ball for all sizes