Clothes for non dress wearing girls

[MrsDux]

My dad's getting married in a couple of months and I need to find something for my tall non dress wearing 9 year old to wear. I've looked online and can't find any 'occasionwear' for girls that isn't a dress. Can anyone suggest a shop I might be missing?

We got dd a nice top with bit of sparkle from peacocks and wore with smart black trousers for wedding last year

River Island or New Look? My DD (9) isn't a dress wearer either and we've found some nice dressy jumpsuits in both. Not sure what's in now though but you may find something.

Would a 'boys' tux work for her, maybe with a coloured shirt/waistcoat/tie?
I could imagine some of these looking good on a tall 9yo

www.rococlothing.co.uk/boys/boys-suits/tuxedos/

Thanks, I'll have a look at jumpsuits, I doubt she'll go for a tux 😞 I was hoping to be able to talk her into a dress but it seems she isn't budging!