Dd is gaining weight rapidly and I don’t know why

[megabrilliant]

I weighed my dd today she is 10 and weighs 7 stone 2 at 4 foot 8 which puts her at 96 centile.
I weighed myself at the same time and I was 7 stone 1 which at 5’2 makes me marginally underweight but only by a couple of lb.
My 8 year old was only 4 stone something and smack bang in the healthy range.
I just don’t understand and I know people must think I feed her junk but I give them both the same breakfast, same packed lunch and cook them the same dinner and so if anything the youngest eats more for her age as she eats the same size meals.
I walk them to and from school each day which is about 15 minutes each way so that’s half an hour exercise and they both do activities out of school plus we go swimming and are quite an active family generally.
No sweet drinks or junk food.

An average day will look like this.

Breakfas
2 pieces of toast and spread or bowl of porridge or very occasionally a croissant or hot cross bun for a change.

Packed lunch
Sandwich or wrap with ham or cheese.
yogurt
piece of fruit
cereal bar for snack at break and water.

Dinner
Meat, all fresh like chicken breast or pork chops, veg, potato or rice or pasta, occasionally beans but rarely.

If they are hungry later they have fruit or cheese or cracker type biscuits but other than that I can’t see how she is ballooning in weight.
I used to give her size 6 clothes I didn’t wear anymore because she fitted in them and now she doesn’t and I’m buying primary school uniform in age 15 online and she’s in teen clothes, I bought a coat in age 15 and she’s struggling to do the zip up.
Her teeth are good, she isn’t a good sleeper but is there anything else I can do for her or is she just a bit bigger but can that still be healthy, I think people think it’s neglect and I’m giving her the wrong food but we all eat the same.

In my experience doing this results in kids overeating whenever they get the chance. DD was 3 when a nursery worker suggested she should lose some weight. I tried to cut out carbs from evening meals, meaning she became obsessed with getting them any way she could outside of the home - and she gained several kilos in a matter of weeks.
From OP's description the child already has a healthy diet which doesn't need changing. If a child has disordered or identifiably unhealthy eating habits then it's time to make a change to the food being provided, but that doesn't seem to be the case here. Removing food groups from evening meals could cause disordered eating that didn't exist before.

The child might 'seem' to be overweight?? The child is literally obese. Why are posters in denial that the child is obese? She might grow out of it she might not. Overweight children tend to grow into overweight adults

that's what I keep saying. Majority of adults are overweight. Half the teenagers are overweight. It really isn't guaranteed an obese 10yo will simply shoot up and slim down without any intervention, it is way more likely they will grow up to be an obese teenager and an obese adult. OP is right to be concerned.

Some of the advice on here is quite shocking. You have said your daughter is over weight so clearly she is eating too much or eating too much of the wrong thing. She might not be having snacks but is her portion sizes too big, rather than ask on here and get some really odd advice I would check nhs websites about what diet a girl if that age should be eating and get some advice on portion sizes.
i personally wouldn’t take her to the doctor unless you suspect she has a health condition as you don’t want her hearing you say she is overweight that is too much to deal with at that age. As a responsible parent you just need to ensure she is eating more of the right things.

@Darkladyofthesonnets
We live in an imperfect world true
And stuff happens
But to suggest a possible pregnancy?
My fingers are crossed it ain't so, and as to you all I can say is
You really took it there