Buying school uniform should be simple, but one of the questions we're asked most is:
"What size should I buy?"
The truth is, there's no one-size-fits-all answer.
Every child grows differently. Some are taller for their age, some are slimmer, and others may need a little extra room for comfort. On top of that, clothing sizes can vary between manufacturers, just as they do when you're shopping on the high street.
That's why we always recommend checking the measurements rather than relying on the age shown on the label.
Why measuring your child makes all the difference
It can be tempting to order the same size as last year. You might also just guess. This is common when you want to tick school uniform off your growing to-do list.
Taking a few minutes to measure your child can save you time, hassle and unnecessary returns.
All you'll need is a soft fabric tape measure and a few simple measurements, including:
- Chest
- Waist
- Hips (where applicable)

Once you have these measurements, compare them with our size guide for each garment before placing your order.
Don't rely on age alone
Age guides are just that, a guide.
Two children of the same age can have very different heights and builds. That is why measurements are more accurate than choosing an age.
Checking the measurements before you buy gives you the best chance of ordering the correct size the first time.
Save yourself time later
Ordering the right size first time means:
- Less chance of exchanging items.
- Fewer returns.
- Less stress.
- One more job ticked off your list.
We know getting ready for a new school year can feel overwhelming. So we’ve made choosing the right size as easy as possible.
Need a little help?
If you're unsure which size to choose, don't worry.
Our size guides are available across our website. If you need extra advice, our friendly team is happy to help.
You can contact us here.