You will need a cable needle.

Finished measurements:
Bust circumference: 38(42.5, 46, 50.5, 54)“ 97( 108, 117, 128, 137) cm
Finished length: 28.5(29, 30 ,30.5, 31.5)” 72(74, 76, 78, 80) cm
Sleeve length to armhole: 17.5(17.5, 18, 18, 18)“ 45(45, 46, 46, 46) cm

Yarn used:
Rowan Alpaca Classic
105 Charcoal Melange - 12(13, 14, 15, 17) balls