Best place to get slim uniform pants?

[Edensmum]

DD is petite to an extreme. The gymbo uniform boot cut pants fit well, a little loose but doable. She could not do the buttons from the lands end ones and those look so not stylish too. Where do you get them? Especially if you are shopping for a slim fit kid.
Thanks

[HIU8]

Old Navy. DS used to wear slim and that is where we had the best luck (other than Lands End). They are much less than Lands End. For the boys up to size 7 was hook and eye at ON (so maybe the girls are something other than button closure as well).

[stillplayswithbarbies]

Gymbo has a slim size. Maybe only on the website?