i almost posted something about this once before! I have a 6 pounder (remy) and an almost 8 pounder (roscoe) and people always say to me 'they sure are big for yorkies!! are they purebred!!?" WHO CARES!? Haha. I love them just the same. Remy I bought with papers & Roscoe we adopted so I don't know but he is, clearly (at least to me) a yorkie through and through! Either way-we love our babies no matter how big or small!
i think that when you see yorkies on tv and when you see a celebrity with a yorkie-they are usually on the smaller side of the spectrum so I guess that is just what all non-yorkie people (haha) think when they hear 'yorkie.'