my brother is five years older than me and he grew tall at a early age and he didn't stop until he was 6'5 when he was about 15 years old. I used to make fun of him and he said he felt sorry that I was the second born and he pointed out families that we knew where the second child was the tallest and he said it would be worse for me because I was a girl. It scared the heck out of me. I was 5'6&1/2" by the eighth grade and thankfully, I stopped at that height.
I've never regretted being big. It's always been a big plus.