So I checked back on Joe's height chart. He was 90cm at 2 years old. If this book is right, Joe will grow to be about 1.8m tall when adult. Just like his papa. And Joy-Anne....she's now about 64cm tall. Or long, since she can stand up yet. Assuming she grows at a conservative rate of 1cm per month, she will be about 84cm at 2 years old. That would mean she'll be about 168cm as an adult. I do hope she grows up tall and lean like her father.