I found this site for you. I haven't looked it over yet, so I don't know if it is any good. I did see a few in the back of one of the pattern books at the store this last weekend, but I don't remember which book it was now.
http://members.aol.com/AHTerrier/outfits.html
I have taken those little coats that lay flat before and used them to cut out the fabric...the kind that hook under the neck and the tummy.