Niceish clothes for DD (6) who is a committed leggings and t shirt wearer

[wanderingwondering]

Comfort is key in dd's world-she will only wear leggings which are slightly too big and cotton t shirts. She hates waistbands being even slightly tight (even though she is tiny-it's not like they're digging in!) and can't abide jeans, cords or even tregging things.

She has a couple of party dresses which she will wear once in a blue moon (rarely for parties!)

But she is starting to look like a bit of a scruff in comparison to her peers and I'd like to introduce her to a couple of outfits which would be nice to wear for parties or days out. We trawled the h&m, next and Boden websites today and nothing really grabbed her attention.

Any ideas?

If it's any consolation my dd is the same - lives in leggings and t-shirts. I also have to have her pick because if I just buy she will say she likes them, wants to keep them, then never wears them! Then I get frustrated that I've wasted money as its too late to return. I literally have to drag my dd to the shops to buy new clothes and sometimes wish she made a little bit more effort but she is who she is and I accept that.
Oh, and my dd is 12!