I also have bought preemie clothing for 2 of my Yorkies. They fit Yumi Yasha ( 4 pounds 4 ounces) perfect, but Jeter( 2 pounds 12 ounces) is still too tiny for them to fit right, so I have to take them in
I get Axl (8 pounds 8 ounces) 0 to 3 months size or newborn if they have it and they fit him good. I also get the teddy bear sweaters at Pat Catans and I make sock sweaters for Jeter. The only thing that I have bought that was real doggie clothing are their PJ'S because they have the opining so they can go potty. I am getting a sewing machine soon and can't wait to make my pups new clothing!