Is my daughter the only one?

Give Next Women's tailored bootcut trousers a try, in the relevant size but petite if she's not tall.

Looking at that picture I think if you keep portion sizes the same or slightly smaller she will stretch alot of that out as she has her growth spurt in the next year or two. Just don't be tempted to increase carbs whilst she's growing but plenty of protein.

Agree. No ten year old should be struggling to fit into an adult size 16.

My Dd was like this. A bit overweight, but getting stuff to fit was a nightmare. She was also very tall in y7,

All those people having a go about weight. Shes 5ft 11 now and slim and beautiful.

l packed it on at 10/11. But stretched out at 13.

No experience myself but am wondering whether boy's shirts might be bigger? Buttons might be the other way round but might solve the immediate problem?

We would be too if mine wasn’t so tall- as yes I agree you usually you need about two years younger for the waist. Anything without an elasticated adjustable waistband I can cinch in is a no go!
Tops are ok though- they last for ages due to the sizing!

Try David Luke as well. I've had to buy school trousers from there as all other ones are too short for DS. They do a good range for girls and boys but aren't cheap.

Yes, I find M&S comes up ridiculously large too. My 10 year old is still in her age 8 M&S skirts and shirts.

OP said 30" waist

Im suprised you’ve found that with M&S. My daughter is very tall for her age, I find M&S come up largest/width size wise compared to most places so are too big for her due to her height but, they often handily have adjustable waist bands so we can buy the right length and then pull the waist right in as she is average size waist. Some of their styles also have hems you can let down which is good for tall kids? They also do some bootleg style school trousers which are stretchy waist and soft material. Maybe try online, for a wider range? Sometimes the stores won’t have what you need.

DD2 is in Asda women's black trousers size 12 - she is very thin (doesn't take after me ) and tall at 15 but school trousers even larger sizes did not fit right size 12 women's did - so I'd just try larger women's size (and cut label out if worried).

I think their blouses go up to age 18.

Other wise I agree with PP try Matalan. It is awkward when they don't fit the cut or fabrics -and it does take some looking.

Op...I just did a quick google and Asda apparently do a plus fit school unform range

I had a similar problem with my dd, Matalan was the best we found. And the shirts lasted well too.

This. Nobody is fat shaming the girl, but believe me, the other kids at secondary school will be merciless. Help her now before she gets targeted. At 10 she has the metabolism to shift the weight.

Does your DD have a medical issue that affects her size? The school may be able to make some uniform compromises if so.

@YeahComeOnThen
There have been more than 2 commenters sharing their concerns about the dd weight and size. My comment was written with sensitivity not blame or rudeness.

This is a forum where people share their thoughts. Some of us are genuinely concerned that the OP is not fully grasping the seriousness of the situation. We base that concert on her choice of minimising language.

Sometimes people need to hear things. That's nuts out if live. Often it's concern. You don't think like us, ok. That's your way of thinking. It's not ours.

No offence OP, but your child needs to lose weight if at all possible. She is not only slightly overweight by anyone's standards.

I don’t know if I’m missing something but if a 14 is too small then have you tried a 16? Seems the obvious solution.

DD is particularly tall (5ft11) and pays rugby so has the thighs to go with it, she wears Next tailored suit trousers in bootcut they are looser and fit better than the school brands and come in black, navy and grey, the school shirts available to us at the uniform shop go up to a 50" bust which is size 22/26 I think so I'm sure you will be able to find some for your daughter.

If her weight is due to inactivity / diet opposed to a medical issue I really would recommend girls rugby, there is a position for every body type and the strong and sturdy are as valued in the scrum as the speedy gazelle like players landing the trys. Girls often don't start until Secondary school age so it's a great time to join and make friends.

if 14s don't fit, then you will have to try 16s

Hemming up trousers is dead easy. Sleeves aren't particularly difficult either, but if you don't fancy doing it yourself then many drycleaners have inexpensive minor alterations service.

or try Sturdy Kids - Plus Fit Children's Clothing, Generous Fit School Uniform and Clothing For Boys and Girls aged 2-16 years

She sounds more than "slightly" overweight, and I wish you well with whatever underlies that

I suspect the casual clothes are maybe more stretchy material and so are able to be made bigger than the actual measured size if that makes sense.
Would it maybe help to see the school nurses or GP? September is still a way off. I don’t think you need to buy things yet.

@YeahComeOnThen oh come on! How is pointing out a medical issue, out of line. Have you seen the stuff spouted on here daily. Far worse.
A ten year old cannot make an informed choice themselves. She may well have a medical condition which OP has chosen not to share. Or she could just be overweight. To the extent OP is struggling to find a uniform that fits.
Acknowledging that isn't a bad thing. Informed decisions, and knowledge around food and getting correct help to aid weight loss is surely the best way forward.

I was an overweight child and fit into size 12 at age 10. I stayed an overweight adult. To put it into context my taller than average 9.5 year old has a 22inch waist so are you sure that waist size is correct OP for your daughter?

Try boys / men’s shirts, they might be more roomy.
id take her into a department store so you can try different brands/sizes in one place so you can get the actual size and fit right. Then order online.

My 10 year old also starts secondary in September and she is slightly overweight. She wears age 9-10 clothing, as she is below average for height. I'm afraid you are minimising the extent of her size. Can you seek advise from GP or the school nurse to investigate, check for potential thyroid issues etc?