Originally Posted by jolanar
They grow up in the books as well. It wouldn't be that hard to stretch the amount of time that the events take place in the book.
The events in the books have happened much quicker than what was originally envisioned by Martin. Eventually the ages of the kids in the show will noticeably outpace the ages of the kids in the book. On top of that the ages of the characters in the show were increased anyway given the fairly young ages in the book.
This will most look bad on the kid who plays Bran.