Sizing can be tricky when kids grow so fast — we get it. Use this guide to find the right fit, and remember: when in doubt, size up. Many of our items also feature growth hems for extra wear.
📏 How to Measure
-
Height: Stand the child flat against a wall, barefoot, and measure from the floor to the top of their head.
-
Chest: Measure around the fullest part of the chest, keeping the tape level and snug (not tight).
-
Waist: Measure around the natural waistline, just above the belly button.
-
Hips: Measure around the fullest part of the hips.
👖 Trousers & Shorts
Measure the waist and inside leg for the best fit.
|
Age
|
Height (cm)
|
Waist (cm)
|
Inside Leg (cm)
|
|---|---|---|---|
|
2–3 yrs
|
92–98
|
50–53
|
36–39
|
|
3–4 yrs
|
98–104
|
53–55
|
39–42
|
|
4–5 yrs
|
104–110
|
55–57
|
42–45
|
|
5–6 yrs
|
110–116
|
57–59
|
45–48
|
|
6–7 yrs
|
116–122
|
59–61
|
48–51
|
|
7–8 yrs
|
122–128
|
61–63
|
51–54
|
|
8–9 yrs
|
128–134
|
63–65
|
54–57
|
|
9–10 yrs
|
134–140
|
65–67
|
57–60
|
|
10–11 yrs
|
140–146
|
67–69
|
60–63
|
|
11–12 yrs
|
146–152
|
69–72
|
63–66
|
|
12–13 yrs
|
152–158
|
72–75
|
66–69
|
Tip: Many school trousers come with growth hems — check the product description, as these add up to 4cm of extra leg length.
👔 Shirts & Blouses (School)
Measure the chest and, for long sleeves, the arm length.
|
Age
|
Height (cm)
|
Chest (cm)
|
Collar Size
|
|---|---|---|---|
|
3–4 yrs
|
98–104
|
55–57
|
11"
|
|
4–5 yrs
|
104–110
|
57–59
|
11.5"
|
|
5–6 yrs
|
110–116
|
59–61
|
12"
|
|
6–7 yrs
|
116–122
|
61–63
|
12.5"
|
|
7–8 yrs
|
122–128
|
63–65
|
13"
|
|
8–9 yrs
|
128–134
|
65–67
|
13.5"
|
|
9–10 yrs
|
134–140
|
67–69
|
14"
|
|
10–11 yrs
|
140–146
|
69–71
|
14.5"
|
|
11–12 yrs
|
146–152
|
71–74
|
15"
|
|
12–13 yrs
|
152–158
|
74–77
|
15.5"
|
Tip: If the collar size is tight but the body fits, size up — a collar that’s too snug will be uncomfortable all day.
🧦 Socks
|
UK Shoe Size
|
Approx. Age
|
Sock Size
|
|---|---|---|
|
4–7
|
2–4 yrs
|
6–9 (small)
|
|
8–10
|
4–6 yrs
|
9–12 (medium)
|
|
11–2
|
6–9 yrs
|
11–2 (large)
|
|
3–5
|
9–12 yrs
|
1–5 (extra large)
|
Tip: Socks are non-returnable for hygiene reasons, so check your child’s current shoe size before ordering.
👟 How to Measure Feet (for Shoes)
Getting shoe size right is important — and kids’ feet grow faster than you’d think (roughly a size every few months in younger children!).
Steps:
-
Put a piece of paper on the floor against a wall, and tape it down so it doesn’t move.
-
Have your child stand on the paper with their heel against the wall — standing with their weight on the foot gives a true measurement (sitting gives a smaller, inaccurate size).
-
Make sure they’re sockless.
-
Mark the longest toe — this isn’t always the big toe!
-
Measure the distance from the edge of the paper (the wall/heel line) to the toe mark.
Size tip: Compare the measurement in cm to our shoe size chart (above), and aim for about a thumb’s width (1cm) of growing room at the toe.
👟 Shoes
Measure the foot in cm and match to UK sizes below.
|
UK Size
|
Foot Length (cm)
|
Approx. Age
|
|---|---|---|
|
5
|
12.5
|
1–2 yrs
|
|
6
|
13.2
|
2–3 yrs
|
|
7
|
14.0
|
3–4 yrs
|
|
8
|
14.8
|
3–4 yrs
|
|
9
|
15.5
|
4–5 yrs
|
|
10
|
16.3
|
5–6 yrs
|
|
11
|
17.0
|
6–7 yrs
|
|
12
|
17.8
|
7–8 yrs
|
|
13
|
18.5
|
8–9 yrs
|
|
1
|
19.3
|
9–10 yrs
|
|
2
|
20.0
|
10–11 yrs
|
|
3
|
20.8
|
11–12 yrs
|
|
4
|
21.5
|
12–13 yrs
|
Tip: Leave about a thumb’s width (roughly 1cm) of growing room at the toe.