You will need a cable needle.

Finished measurements:
Bust circumference: 34(38.5, 42.5, 46.75, 51)“ 86.5(97.5, 108, 119, 129.5) cm
Finished length: 21.5(22, 22.75, 23.25, 24.5)” 54.5(56, 58, 60.5, 62) cm
Sleeve to underarm: 6(6, 6.25, 6.25, 6.25)“ 15(15, 16, 16, 16) cm

Yarn used:
Rowan Cotton Glace
Shae 725 Ecru - 13(15, 17, 19, 21) balls