You will need 5(5, 5, 5, 6) medium buttons
You will also need stitch holders and stitch markers.

Finished measurements:
Back width: 10.25(10.75, 11, 11.5, 11.75)“ 26(27, 28, 29, 30) cm
Finished length: 10(10.25, 11.5, 12.5, 13.25)” 25.5(27.5, 29.5, 31.5, 33.5) cm
Sleeve to underarm: 6.25(7, 7.75, 8.25, 9.25)“ 16918,20, 22.5, 25) cm

Yarn used:
Rowan Summerlite DK
Shade 466 Seashell - 4(4, 4, 5, 5) balls