What I like to put on mine in the really cold part of winter is the 4-legged jumpsuits made of fleece. Just a one-piece sweatsuit is what they are. They are comfortable and warm. When it's really cold, a coat goes over them. She looks like a little roly-poly going down the street!
This is what I was talking about - just an example:
http://www.handsnpaws.com/product/PE...g-Apparel.html