You will also need:
1 x Pair 3.25mm Knitting Needle
1 x pair of 3.75mm knitting needles
1 x pair of 4.00mm knitting needles
13 x buttons for Cardigan
4 x buttons for Dress
8 x buttons for Hat
Tension
22 sts and 30 rows to 10cm (4in) over st-st on 4mm needles.