Wedding guest dress for a 12 year old

[manchestermom5]

Hello,
Where can I buy a lovely wedding guest dress for my tall 12-year-old? Preferably ankle length.

I got my daughter’s for my mums wedding from Quiz clothing.

She was 12 as well and the one we got was about mid-shin length.

Couple of very dressy ones from Monsoon at M&S. would she fit a small woman's size if she is tall? Might give you more options

What sort of look does she like?

You got to be careful with ankle length as they can tend to look a bit bridesmaidy at that length

Thank you for the suggestions I will have a look.