there are a lot of YT seamstresses who make lovely lovely clothes-dresses, shirts, tanks--most if not all, even custom make it for your fur butts. there's a whole list of them in the 'featured products for sale' section, i believe, where it lists asll the yt members with stores and products.
some off of the top of my head are shana (tinkerbell's closet), tiger's mom-go fetch, and sonja (pocomutt), since i have ordered from them before.
http://www.yorkietalk.com/forums/showthread.php?t=68686
that's the thread, but i'm pretty sure there's a lot more YT'ers who make and sell clothes.
best wishes.