You will need 6 buttons. Rowan used #1365/30 from Bedecked in the UK.

Note: One strand of Rowan Felted Tweed and one strand of Rowan Kidsilk Haze are held together throughout.

Finished measurements:
Bust circumference: 34.25(38, 41.75, 45.5, 50)“ 87 ,96.5, 106, 115.5, 127) cm
Finished length: 22.25(23.5, 24.5, 25.25, 26)” 58(60, 62, 64, 66) cm
Sleeve to underarm: 17.75(17.75, 18, 18, 18)“ 45(45, 46, 46, 46) cm

Yarns used:
Rowan Felted Tweed
A. 159 Carbon - 3(3, 4, 4, 4) balls
C. 191 Granite - 2 balls for all sizes
E. 161 Avocado - 2 balls for all sizes
G. 151 Bilberry - 2 balls for all sizes

and

Rowan Kidsilk Haze
B. 605 Smoke - 2 balls for all sizes
D. 664 Steel - 1 ball for all sizes
F. 597 Jelly - 1 ball for all sizes
H. 606 Dewberry - 1 ball for all sizes