One odd byproduct of watching a show over the course of many seasons is seeing its cast age. And when that cast includes kids, it's even more jarring: When did he get so big? And when you get used to their current height and voice depth, going back and rewatching an episode from the first season of one of these shows could cause a more sentimental person to get a little choked up. Oh! She used to be a baby! Cue up "Sunrise, Sunset," and let's take a journey with some of today's TV kids, to see how much they've grown since the first seasons of their shows.