There is no such thing as a "teacup" yorkie so I guess I'm not sure what you are asking for exactly
Are you looking for pictures of a small adult yorkie? I dont think you can really tell size of a yorkie just by a picture of them, unless there is something else in the picture with them that you can compare to...but a smaller yorkie ought to look no different than a larger yorkie.
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~Magnifique Yorkies~
Purchasing from backyard breeders, pet shops, and puppymills perpetuates the suffering of other dogs.
Educate yourself and buy from reputable breeders or rescue.