Jackson is 3 days shy of being a year old & he is 7.5 lbs. He has really long legs though.
I always read to figure out their weight you double what they weighed at 12 weeks & add about a 1/2 lb. He was about 3.5 lbs at 12 weeks so that is right on. I don't know when they stop growing though as he is my first Yorkie. My cocker was approx. his adult weight when he hit 8 months old.