Baby Clothing Size Guide

Sizing can vary between brands, so we've put together this guide to help you find the best fit for your little one. Babies grow at different rates, so always consider your baby's current height and weight alongside their age.

Need help? Get in touch and we'll be happy to advise.

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How to Measure

• Height: Measure from the top of the head to the heel, with baby lying flat.
• Weight: Use your most recent health visitor or home scales reading.
• Chest: Measure around the fullest part of the chest, keeping the tape horizontal.
• Waist: Measure around the natural waistline, just above the belly button.
• Hips: Measure around the widest part of the hips and bottom.
• Inside leg: Measure from the crotch down to the ankle bone.
• Head circumference: Measure around the widest part of the head, just above the ears.
• Foot length: Stand your child on a sheet of paper, mark the heel and longest toe, then measure between the marks.

Tip: If your baby is between sizes, we generally recommend sizing up for longer wear, especially for sleepsuits and rompers.

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Pigeon Organics

Official Pigeon Organics clothing sizes, based on your child's height.

Age	Height of Child
Newborn	Up to 56 cm
0–3 months	Up to 62 cm
0–5 months	Up to 66 cm
3–6 months	Up to 68 cm
6–12 months	Up to 77 cm
12–18 months	Up to 85 cm
1–2 years	Up to 90 cm
2–3 years	Up to 98 cm
3–4 years	Up to 104 cm
4–5 years	Up to 110 cm
5–6 years	Up to 116 cm
6–7 years	Up to 122 cm
7–8 years	Up to 128 cm

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Mayoral

Official Mayoral sizes. We stock Mayoral clothing from 3 months up to 12 years. All measurements are in centimetres.

Baby (0–24 months)

Age	Height	Chest	Waist	Hips	Inside Leg
3 months	62	42	44	48	23.5
6 months	68	44	45	50	27
9 months	74	46	46	52	28.5
12 months	80	48	47	54	30.5
18 months	86	50	48	56	34
24 months	92	52	50	58	37.5

Kids (2–9 years) & Junior (8–16 years)

Age	Height	Chest	Waist	Hips	Inside Leg
2 years	92	52	50	58	38
3 years	98	54	52	60	41.5
4 years	104	56	54	62	45.5
5 years	110	58	55	64	49
6 years	116	60	56	66	53
7 years	122	62	58	68	57
8 years	128	64	60	70	61
9 years	134	66	62	72	64
10 years	140	69	63	76.5	–
12 years	152	73	66	81	–

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Little Green Rascals

Official Little Green Rascals sizes. Weights are approximate.

Age / Size	Height (cm)	Weight (approx. kg)	Chest (cm)	Waist (cm)
Newborn	56	3.6	41	41
0–3 months	62	6.4	44	43
3–6 months	68	7.8	45.5	44
6–9 months	74	8.8	46	45
9–12 months	80	9.7	50	47
12–18 months	86	11.2	52	49
18–24 months	92	12.5	54	51
2–3 years	98	–	55	52
3–4 years	104	–	57	54
4–5 years	110	–	59	56
5–6 years	116	–	61	58

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Powell Craft

Powell Craft sizes are garment measurements (the item itself, laid flat), not body measurements. Compare them with a similar item that already fits your child well. All measurements are in centimetres.

Cotton Jersey Pyjamas

Age	Length (neck to hem)	Chest (back and front)	Sleeve (shoulder to cuff)	Waist (relaxed)	Waist (stretched)	Inner Leg	Outer Leg
1–2 UK / 2 US	34	55	27	38	60	30	48
2–3 UK / 4 US	39	62	32	42	64	34	53
4–5 UK / 6 US	43	68	36	46	66	40	58
6–7 UK / 8 US	48	72	39	48	70	45	64
8–9 UK / 10 US	53	80	43	54	84	54	76

Girls Button Pyjamas

Age	Length (neck to hem)	Chest (back and front)	Sleeve (shoulder to cuff)	Waist (relaxed)	Waist (stretched)	Inner Leg	Outer Leg
1–2 years	35	68	28	42	64	29	48
2–3 years	38	72	31	42	68	32	57
4–5 years	41	76	35	48	70	37	59
6–7 years	47	82	39	48	74	42	64
8–9 years	52	86	43	52	84	50	71
10–12 years	57	96	48	54	88	60	83

Boys Button Pyjamas

Age	Length (neck to hem)	Chest (back and front)	Sleeve (shoulder to cuff)	Waist (relaxed)	Waist (stretched)	Inner Leg	Outer Leg
1–2 years	35	66	27	42	68	28	46
2–3 years	37	70	31	46	70	31	51
4–5 years	41	76	34	48	74	35	55
6–7 years	46	84	38	52	80	42	62
8–9 years	51	92	42	50	84	47	69
10–12 years	56	94	46	54	96	61	83

Raincoats

Age	Length (neck to hem, back)	Chest (back and front)	Sleeve (top of shoulder to cuff)
1–2 years	39	72	36
2–3 years	46	80	42
4–5 years	52	84	46
6–7 years	55	90	49

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Dandelion

Official Dandelion sizes, including premature baby sizes. Heights and weights are approximate maximums for each size.

Size	Max Height (approx.)	Max Weight (approx.)	Head-to-Toe Length
2–3 lb (Premature)	N/A	1.4 kg / 3.0 lbs	26–32 cm
3–5 lb (Premature)	N/A	2.3 kg / 5.0 lbs	34–40 cm
5–8 lb (Premature)	50 cm	4.5 kg / 7.5 lbs	40–46 cm
Newborn	56 cm	4.5 kg / 10.0 lbs	–
0–3 months	62 cm	6.5 kg / 14.5 lbs	–
3–6 months	68 cm	8.0 kg / 17.5 lbs	–

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Inch Blue (Shoes)

Official Inch Blue shoe sizes. Measure your child's foot and choose the size whose inner sole is slightly longer, leaving a little room to grow.

Size	Age	Inner Sole Length (cm)	UK Shoe Size	EU Shoe Size
Small	0–6 months	10.5	0–2	17–18
Medium	6–12 months	12	2–3.5	19–20
Large	12–18 months	13.5	3.5–5	20–22
Extra Large	18–24 months	14.5	5–6.5	22–23
Child Small	2–3 years	16	6.5–8	24–25
Child Medium	3–4 years	17	8–9	25–27
Child Large	4–5 years	19	9–10	27–28
Child Extra Large	5–6 years	20	10–12	28–30

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Grass & Air

Official Grass & Air sizes.

Clothing

All measurements are in centimetres.

Age	Height	Chest	Waist
12–18 months	76–83	47–49	45–48
18–24 months	83–90	49–51	48–50.5
2–3 years	90–98	51–54	50.5–52
3–4 years	98–104	54–56	52–53.5

Kids Wellies

UK	EU	US
Infant 3	19	4
Infant 4	21	5
Infant 5	22	6
Infant 6	23	7
Infant 7	24	8
Infant 8	25	9
Infant 9	27	10
Infant 10	28	11
Infant 11	29	12
Infant 12	30	13
Infant 13	31	1

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General Baby Sizing (Other Brands)

A general UK/EU guide for brands without their own chart listed here. Brand sizing can vary slightly, so please use this as an approximate reference.

Age Range	Height (cm)	Weight (kg)	Chest (cm)	Head Circ. (cm)
Newborn / First Size	Up to 56 cm	Up to 4.5 kg	~40 cm	~34–36 cm
0–3 Months	56–62 cm	3.5–6 kg	~41–43 cm	~36–38 cm
3–6 Months	62–68 cm	6–8 kg	~43–45 cm	~40–42 cm
6–9 Months	68–74 cm	7.5–9.5 kg	~45–47 cm	~43–44 cm
9–12 Months	74–80 cm	9–11 kg	~47–49 cm	~44–46 cm
12–18 Months	80–86 cm	10–13 kg	~49–51 cm	~46–48 cm
18–24 Months	86–92 cm	11–14 kg	~51–53 cm	~47–49 cm
2 Years	92–98 cm	13–15 kg	~53–54 cm	~49–50 cm
3 Years	98–104 cm	14–17 kg	~54–56 cm	~50–51 cm

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Sleepsuits, Rompers & Dresses: Fit Notes

• Sleepsuits: Size up if your baby is long in the body, as height is the key measurement.
• Rompers: Short-leg rompers are more forgiving; go by chest and weight. Long-leg rompers follow the height guide.
• Dresses: Age and height sizing is usually accurate.

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Size guides are a general reference and individual garments may vary. For help with a specific product, please contact us.