Trousers for tall/ slim DD

[Sprookjesbos]

Hi all
DD is nearly 11. She's reasonably tall and very slim and just having a nightmare finding any trousers for her. She pretty much lives in black F+F leggings age 10-11 which fit her ok if a bit short but any time she wants to 'dress up' eg to go to a party/ a friend's house we have nothing for her to wear!
Bought some lovely wide fit jeans from h&m in 10-11 and she's got the little elastic pull ins on the smallest setting so they fit on the waist but it makes the waistline quite bunchy and uncomfortable. I know if we went down a size they would be flapping around her ankles. All sports style leggings are too baggy and/or the waistline is gaping at the back. She's 145cm and 30kg. Eats really well, fit and healthy, it's just how she's built. She's struggling a bit now friends Re becoming more fashion conscious as none of the clothes for older children seem to fit her.

Can anyone recommend a brand that fits this build quite well? Had enough of spending money on things that don't fit!

Try Hollister, my dd has their size 6 extra long trousers and they fit properly on the waist. She also sometimes does well in H&M age 14-15 for trousers, but it depends on the style and she often has to roll the waist. Decathlon sometimes has good sports / casual leggings in age 15, which also stay up and fit ok, though again she often has to roll the waist.

Thanks! Found some Hollister jeans on vinted so we're going to give them a go!

Dungarees?