Measurements
To fit chest sizes
45, 50, 55 cm (18, 20, 22 in)
Full length
48, 56, 64 cm (19, 22, 25 in)
Inside leg length
18, 23, 28 cm (7, 9, 11 in)

Each pamphlet and The Baby Knitting & Crochet Book have a different set of yarn recommendations. Those below are from the book.

Materials
Peter Pan Darling DK or Peter Pan Wisp
or Peter Pan Lustre Knit
Main Colour 4, 5, 6 X 20 gram balls
Contrast Colour 1, 1, 1 X 20 gram ball
2 buttons.