I'm the wrong person to ask because I buy Jayla the cute clothes and break the bank.
I just ordered four things from
Dog Clothes, Dog Carriers, Dog Collars, Dog Beds | DoggieVogue.com
They were a bit less than most of the other boutique websites and have a flat fee for shipping.
Look at this harness with blue angel wings:
Blue Angel Wing Dog Harness
They even feature a Yorkie model! Who can resist this?