Bleh... I never listen to what other people say. Hubby and I took Penny to a fish store with us a couple of years ago, and the owner said, "Oh, you have a Silky." I corrected him, and he acted like I was a moron. And Penny is even within the standard range, at 6.6 lbs.
Two of her littermates are on the larger side. One is 9 lbs and the other was over 12 lbs last I knew. So you never know!