You will need

Cardigan
0-3 months (16in Chest) - 2 x 50gm Balls
3-6 months (18in Chest) - 2 x 50gm Balls
6-12 months (20in Chest) - 2 x 50gm Balls
1-2 years (22in Chest) - 3 x 50gm Balls
3-4 years (24in Chest) - 4 x 50gm Balls
5-6 years (26in Chest) - 4 x 50gm Balls

Hat
0-3 months (16in Chest) - 1 x 50gm Ball
3-6 months (18in Chest) - 1 x 50gm Ball
6-12 months (20in Chest) - 1 x 50gm Ball
1-2 years (22in Chest) - 1 x 50gm Ball
3-4 years (24in Chest) - 1 x 50gm Ball
5-6 years (26in Chest) - 1 x 50gm Ball

Shoes
0-3 months (16in Chest) - 1 x 50gm Ball
3-6 months (18in Chest) - 1 x 50gm Ball
6-12 months (20in Chest) - 1 x 50gm Ball

3.75mm and 4mm Needles for Cardigan and Hat
2.75mm Needles for 1st size Shoes
3mm Needles for 2nd size Shoes
3.75mm Needles for 3rd size Shoes
Stitch Holders
1 Button for Cardigan
2 Buttons for Shoes