To fit:

chest size
30 (35, 40, 45, 50) cm
12 (14, 16, 18, 20) inches

Finished measurement

Chest
33 (41, 45, 51, 55) cm
13 (16.5, 18, 20.5, 22) inches

Length of back
19 (22, 26, 30, 33) cm
7.5 (8.5, 10, 12, 13) inches

Sleeve length
10 (12, 14, 17, 21) cm
4 (4.5, 5.5, 6.5, 8.5) inches

Needs 1 (1, 1, 1, 2, 2) balls of yarn to make both cardigan and bonnet

Needs 3 buttons