You will need 5 buttons for the Onesie. Sirdar used their button # B5611-0863. You will need stitch holders.

Finished measurements:
Onesie:
Chest circumference 16.65(18, 19.75, 20.5, 21.25, 22)“ 58(60, 65, 69, 71, 74) cm
Finished length (sole to neck): 21.25(22.5, 23.75, 24.75, 26.75, 28.25)” 54(57, 60, 63, 68, 72) cm
Sleeve to underarm: 6.25(6.5, 7, 8, 8.75, 9.75)“ 16(17, 18, 20, 22, 25) cm

Hat: Sized to fit average child’s head in size given.

Mittens: Sized to fit average child’s hand in size given.

Yarn used - Sirdar Snuggly DK
Onesie:
A. 428 Soft Brown - 2 balls for all sizes
B. 251 White - 2(2, 2, 2, 3, 3) balls
C. 498 Playing Field - 1 ball for all sizes
D. 505 Ketchup - oddments
E. 501 Bramble - oddments

Hat
A. 428 Soft Brown - 1 ball for all sizes
B. 251 White - 1 ball for all sizes
C. 498 Playing Field - 1 ball for all sizes

Mittens:
A. 428 Soft Brown - 1 ball for all sizes
B. 251 White - 1 ball for all sizes