Hi, I have a girl "Princess" that is in Tallahassee. She's almost 6 months, she's not going to be 4 lbs. She's not even 3 lbs yet. Her thread is here with alot of her info.
http://www.yorkietalk.com/forums/showthread.php?t=81584
In the Yorkies For Sale under Small AKC Girl "Princess" Pm me if you'd like to talk about her.