You will need a cable needle.

Finished measurements:
Bust circumference: 34.25( 38.25, 42.25, 46, 50, 54, 57.75, 61.75, 66.5)“ 87( 97, 107, 117, 127, 137, 147, 157, 169) cm
Finished length: 26.5( 27.25, 28, 28.25, 29.5, 30.25, 30.75, 31.5, 32)”
Sleeve seam: 11.5( 11.75, 11.75, 12.25, 12.25, 12.25, 12.25, 12.25, 12.25)“ 29(30, 30, 31, 31, 31, 31, 31, 31) cm

Yarn used:
Rowan Pebble Island
Shade 027 Rockhopper - 7(7, 8, 9, 10, 11, 12, 13, 15) balls