You will need 5 buttons. Rowan used style # A0480 from Groves and Banks

Finished measurements:
Back width: 22.5(24, 26.5, 28.5, 30.5)“ 57.5(61.5, 67, 72, 77.5) cm
Total length: Approx. 31(31.5, 32.5, 33.5, 34.5)” 78.5(80.5, 83, 85, 87) cm
Sleeve length to underarm: 18.5(18.5, 19, 19, 19)“ 47(47, 48, 48, 48) cm

Yarn used:
Rowan Kid Classic
Color 890 Cement - 19(20, 22, 23, 24) balls

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