This pattern is Design #7 in Cleckheaton Book 951, and the Cocoon version was also in Knit Simple Magazine Fall 2007 as Design #28.

To fit:
age: newborn / 3mths / 6mths / 9mths
chest: 35 / 40 / 45 / 50cm
sleeve length: 11 / 13 / 16 / 19cm (approx)
head: 35 / 40 / 45 / 48cm
bootees: 7 / 8 / 9.5 / 11cm

Yarn Requirements:
Cocoon (50gm balls)
Jacket: 2 / 2 / 3 / 3
Hat: 1 / 2 / 2 / 2
Bootees: 1 / 1 / 1 / 1
Full Set: 3 / 4 / 4 / 5

OR

Merino Bambino (25gm balls)
Jacket: 3 / 4 / 5 / 6
Hat: 2 / 3 / 3 / 3
Bootees: 1 / 1 / 1 / 1
Full Set: 5 / 6 / 7 / 8

Also required:
1 stitch holder
1 button
wool needle for sewing seams