You will also need 12 buttons - Rowan used #BN1337 from Bedecked in the UK.

Finished measurements:
Bust circumference: 52.25(55.75, 60, 63.5, 68” (132.5(141.5, 152.5, 161.5, 172.5) cm
Finished length: 22.75(23.5, 24.5, 25.5, 26)“ 58(60, 62, 64, 66) cm
Sleeve to underam: 15(15, 15.5, 15.5, 15.5)” 38(38, 39, 39, 39) cm

Yarn used:
Rowan Island Blend Fine
Shade 101 Vellum - 9(10, 11, 11, 12) hanks