Your baby is adorable and def. Yorkie!
Something like that happened to me when we went to the dog park. A lady with a huge Yorkie, about 22 pounds, came in and when I was asked if my 4 were Yorkies she said no, they can't be, they are to small... (Mikki 5.5 lbs., Minnie 6.5 lbs., Maggie 8 lbs. and Maxie 12 lbs.) I always thought my Yorkies are on the bigger side and I told her that and that Minnie meets almost the AKC standard with her features. Then she said the AKC doesn't define the breed standards... HUH??? I just answered with my standard sentence for ignorant people: "You are absolutely right, dear!" and let her stand there with her mouth open...
The next time somebody says something like that to me I'll tell her that she might not be human b/c humans are supposed to be nice and knowledgable...