Welcome to the club!!
lol I felt the same way, but I have been able to find clothes now that I am really looking!!! I have found great buys (for next winter) at petsmart who is getting rid of winter stuff!! Got a nice parka with a hood for 3.99!!! you can also try walmart who has a line of doggy clothes as well as target and old navy!! My problem is that sometimes the xs is still a little big for nathan but he will grow into it!! Also some of the YT folks have their own doggie boutiques with great clothes for the little boys too!! You will see that they have a link attached to their signature and I belive there is a listing on the forum of a lot of websites for clothes too!!
Hope this helps!!!