You will need

Matinee Coat
0-6 months (16in Chest) - 2 Balls
6-12 months (18in Chest) - 2 Balls
1-2 years (20in Chest) - 3 Balls

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

4mm Needles
Stitch Holders
3 Buttons for Matinee Coat
5 (5 : 6 : 6 : 7) Buttons for Cardigan