You will need 4 buttons, approximately .5” (12mm) each
You will also need stitch holders.

Finished measurements:
Bust circumference: 35.25( 39.25, 43, 47, 51, 55, 58.75, 62.75, 67.25)“ 89.5( 99.5, 109.5, 119.5, 129.5, 139.5, 149.5, 159.5, 10.5) cm
Finished length: 22.75( 23.5, 24.5, 25.25, 26, 26.75, 27.25, 28, 28.25)” 58( 60, 62, 64, 66, 68, 69, 71, 72) cm
Sleeve seam:17.25( 17.75, 17.75, 18, 18, 18, 18, 18, 18)“ 44( 45, 45, 46, 46, 46,46, 46, 46 ) cm

Yarn used:
Rowan Summerlite 4 Ply
Shade 436 Ecru - 8(8, 8, 9, 9, 9, 10, 10, 11) balls