You will need

Jacket
Prem (12in Chest) 1 Ball
0-3 mths (14in Chest) - 1 Ball
3-6 mths (16in Chest) - 1 Ball
6-9 mths (18in Chest) - 2 Balls
9-12 mths (20in Chest) - 2 Balls

Sweater
Prem (12in Chest) 1 Ball
0-3 mths (14in Chest) - 1 Ball
3-6 mths (16in Chest) - 1 Ball
6-9 mths (18in Chest) - 2 Balls
9-12 mths (20in Chest) - 2 Balls

Tank Top
Prem (12in Chest) 1 Ball
0-3 mths (14in Chest) - 1 Ball
3-6 mths (16in Chest) - 1 Ball
6-9 mths (18in Chest) - 1 Ball
9-12 mths (20in Chest) - 1 Ball

Dress
Prem (12in Chest) 1 Ball
0-3 mths (14in Chest) - 1 Ball
3-6 mths (16in Chest) - 1 Ball
6-9 mths (18in Chest) - 1 Ball
9-12 mths (20in Chest) - 2 Balls

3.25mm and 4mm Needles
4mm Crochet Hook
4 Buttons for Jacket