Measurements in cm

Size guide

We size by body measurement, not by the number on a birthday cake. Take three measurements with a soft tape, match them to the band below, and you will get it right the first time.

All measurements are body, not garment One free size exchange on every order

Two children in AV Fashion co-ord sets being measured at home

Between two sizes? Always size up.

Our trousers carry adjustable waist tapes and our dresses have deep let-down hems, so the larger size fits comfortably now and still fits after the next growth spurt. Sizing down is the single most common reason a parcel comes back to us.

Measurement tables

Choose an age band. Every figure is the child’s body measurement in centimetres.

Newborn 0–18 months Bodysuits, rompers, sleepsuits and first sets. Cut with a nappy allowance through the hip.
Size	Age	Height	Chest	Waist
NB	Newborn	up to 56	40–42	40–41
0–3M	0–3 months	56–62	42–44	41–43
3–6M	3–6 months	62–68	44–46	43–45
6–9M	6–9 months	68–74	46–48	45–47
9–12M	9–12 months	74–80	48–50	47–48
12–18M	12–18 months	80–86	50–52	48–50

Newborns vary enormously in the first eight weeks. If your baby is over 3.5 kg at birth, start at 0–3M rather than NB.

Toddler 1–4 years Play-first shapes with roomy knees, elasticated waists and shoulder poppers where they help.
Size	Age	Height	Chest	Waist
12–18M	12–18 months	80–86	50–52	48–50
18–24M	18–24 months	86–92	52–54	50–51
2Y	2–3 years	92–98	54–56	51–52
3Y	3–4 years	98–104	56–58	52–53
4Y	4–5 years	104–110	58–60	53–54

Still in nappies at night? Toddler bottoms are cut 2 cm wider through the seat than the kids band at the same height.

Kids 2–8 years Our largest band. Reinforced knees, deep hems and adjustable waist tapes on every trouser.
Size	Age	Height	Chest	Waist
2–3Y	2–3 years	92–98	53–55	50–52
3–4Y	3–4 years	98–104	55–57	52–53
4–5Y	4–5 years	104–110	57–59	53–54
5–6Y	5–6 years	110–116	59–61	54–55
6–7Y	6–7 years	116–122	61–63	55–57
7–8Y	7–8 years	122–128	63–66	57–58

Where a child is tall for their age, follow height first and take the chest measurement as the tie-breaker.

Juniors 5–12 years Slimmer through the body with a longer rise, cut for children who have lost the toddler shape.
Size	Age	Height	Chest	Waist
5–6Y	5–6 years	110–116	58–60	53–55
6–7Y	6–7 years	116–122	60–62	55–56
7–8Y	7–8 years	122–128	62–65	56–58
8–9Y	8–9 years	128–134	65–68	58–60
9–10Y	9–10 years	134–140	68–71	60–62
10–11Y	10–11 years	140–146	71–75	62–64
11–12Y	11–12 years	146–152	75–79	64–66

Juniors sizes overlap the kids band deliberately. Same height, narrower cut — pick juniors for a neater line, kids for room to move.

How to measure

Four measurements, two minutes, a soft tape. Measure over vest and pants rather than over clothes, and keep the tape snug without pulling.

Step 1
Height

Barefoot, heels and back against a wall, chin level. Mark the top of the head and measure to the floor. This is the number that decides the size.
Step 2
Chest

Around the fullest part of the chest, under the arms, with arms relaxed at the sides. Keep the tape level all the way round the back.
Step 3
Waist

The narrowest point, roughly at the belly button. Ask for a normal breath out — not held in, not pushed out. Two fingers should slide under the tape.
Step 4
Inside leg

From the top of the inner thigh straight down to the ankle bone. Use it to check trouser length when your child is between two heights.

Fit notes by category

How each part of the range actually behaves on a moving child.

Dresses & party wearGenerous through the skirt, true to chest measurement. Lined bodices sit close, so take the chest figure seriously rather than the age.
T-shirts & topsRelaxed, with a dropped shoulder. If your child dislikes anything close to the neck, size up — the neckline widens proportionally.
Bottoms & joggersElasticated with an internal adjustable tape from size 2Y up. Choose on waist first, then check the inside leg for length.
OuterwearCut one layer larger by design so a jumper fits underneath. Order your usual size; sizing up here leaves the sleeves too long.
Rompers & nightwearSized to height because the length matters most. Snug-fit sleepwear is intentionally close — it is a safety standard, not a small make.
Co-ord & matching setsBoth halves are cut to the same band. If chest and waist land in different sizes, buy the larger and let the waist tape do the work.

Size guide

Between two sizes? Always size up.

Measurement tables

How to measure

Height

Chest

Waist

Inside leg

Fit notes by category