You will need

Jacket
3-6mths (16in Chest) - 1 Ball of Shade A and 1 Ball of Shade B
6-9mths (18in Chest) - 1 Ball of Shade A and 1 Ball of Shade B
9-12mths (20in Chest) - 2 Balls of Shade A and 1 Ball of Shade B
12-18mths (22in Chest) - 2 Balls of Shade A and 1 Ball of Shade B

Sweater
3-6mths (16in Chest) - 1 Ball
6-9mths (18in Chest) - 1 Ball
9-12mths (20in Chest) - 2 Balls
12-18mths (22in Chest) - 2 Balls

Cardigan
3-6mths (16in Chest) - 1 Ball
6-9mths (18in Chest) - 1 Ball
9-12mths (20in Chest) - 2 Balls
12-18mths (22in Chest) - 2 Balls

Hat
3-6mths (16in Chest) - 1 Ball
6-9mths (18in Chest) - 1 Ball
9-12mths (20in Chest) - 1 Ball
12-18mths (22in Chest) - 1 Ball
(Small Amount of Contrast for all sizes)

3.75mm and 4mm Knitting Needles
2 Buttons for Jacket
1 Button for Cardigan
1 Button for Hat