Teacup Yorkies are not a breed, and official breed standards for showing an adult Yorkshire Terrier insist that a Yorkie must weigh between 4 and 7 pounds. (reference.com)
This is the Olde English Bulldogge's Official Breed Standard as provided by the most acknowledged registry of the breed, the International Olde English Bulldogge Association. (riobravobulldogs.com)
The AKC official breed standard does not set a standard weight range. (en.wikipedia.org)