Materials
1 (2) x Stylecraft Cotton Look a-like DK 100g (approx. 210m/230yds)
Or a suitable alternative

Notions
4mm Hook, 2 x 12mm broomstick/knitting needles

Tension
20 sts and 12 rows are 10cm square in pattern

Notes
Use a smaller hook for the foundation dc row. Worked top down, in the round, turn at the end of each round, turning chain is not counted as a stitch.

Finished size
New Born, (0-3 months, 3-6 months, 6-9 months, 9-12 months)

Age
Months NB 0-3 3-6 6-9 9-12
Height 51 cm 58.5 cm 66 cm 71 cm 74 cm
Chest 38 cm 42 cm 44.5 cm 46 cm 47 cm

10 Feb 2018
I tried the 6-9 months size on my niece yesterday and realise that the straps could do with being buttoned rather than fully stitched on both sides so I will be making an adjustment to the pattern and uploading a revision.