[DJDB]

I believe that yorkies do need clothing at times, just like chihuahuas do, because they get cold easily. I truly think that as long as the pup is ok with it then there's no harm - we would never make Oz wear anything if he fought it. We have a few shirts/sweaters for Oz because he HATES the rain, and it rains here a lot. He is trained to potty outside, so it's imperative that he is comfortable when he's out there. In the house he is normally a naked dog. I see the reason and need for a top-knot as well, if their hair is long enough.

Personally, I would not dress a "regular" dog that has an undercoat and real fur because I think they would get over-heated.