You will need;

Cardigan

32" Chest - 8 Balls
34" Chest - 9 Balls
36" Chest - 10 Balls
38" Chest - 11 Balls
40" Chest - 12 Balls
42" Chest - 13 Balls

3.25mm Needles
4mm Needles
8 Buttons

Cardigan

32" Chest - 5 Balls
34" Chest - 5 Balls
36" Chest - 6 Balls
38" Chest - 6 Balls
40" Chest - 7 Balls
42" Chest - 7 Balls

3.25mm Needles
4mm Needles
Stitch Holders