Ymommie,
YES, actually there are quite a few of us who have Yorkezillas !
MY Male Sneakers is at 12.5 lbs, 2.5 years old, and is PB.
Actually, from what I've seen, Yorkshire is one of the most varied
Breeds on weight. I've seen quotes from just a few Ounces, to
over 20 pounds.
As stated, the "Breed Standard" is from 5 to 7 pounds, but, that's
a "regulation" (I think) by the AKC. A criteria you must meet, IF
you wanted to Show your pup in one of their events.
Beyond that, weight seems to have nothing to do with demeanor.
I've seen complaints and praises on the full range of weight, and
both sex's included. Attitude seems to not be an issue, which we
customarily relate to a Male.
When it comes to being "forward"
my Female Becca doesn't take a second place, in this house anyway.
So, all in all, you'll see a general sense of "more to love".
Have a good Day !
S.W.