The changes surprised me

I was really surprised when I looked at the pictures my sister sent me.
On the pictures were my sister's kids, my nephew and my nice. I did not recognize them. I haven't seen them since 2005 and they had changed a lot.
My nephew is a tall, skinny 16 year old young man. He is taller then his father and then his grandfathers to. My nice is going to be 12 years old next month, she is a pretty girl, not a little girl anymore. When I came here in America seven years ago they were little kids, now they are taller than me.