Hi, I have a lovely yorkshire terrier called Ruby she's sixteen weeks and weighs 3lb 8oz how big can i expect her to be as an adult and atroughly what age will she stop growing?

according to the breed standard weight at adult 4-7lb ,7-8inches high..
but depending on the parents lines she could be a bit bigger or smaller. :-)

Mine is 9 months old and weighs approx 12lbs..........  and very tall.  Not a perfect specimen but we love him anyway :-) Hes our butch Yorkie ha ha