Beautiful baby jacket and hat

Sizes: 0-3mths, 3-6mths, 6-9mths, 1yr, 2yrs, 3yrs
Yarn: 8ply – 50gms/100mtrs  3 (3, 4, 4, 5, 6) balls
Needles: 4mm
Tension: 22sts, 30 rows per 10cm (4″)
Other Requirements: 2 Stitch holders, stitch marker, 3 or more buttons