Her 20 months came and went this last Saturday. Why is this a date to remember at all? Well, according to our Kaiser Doctors this is considered the half way point for her vertical growth. Statistically speaking girls finish half their veritcal growth for their full lives at 20 months. For boys its supposed to be 24 months. Well, she's somewhere between 33 1/2 inches and 34 1/2 inches. That means a height between 5'7" and 5'9".