Ralphie in "Elf".
And out of costume.
Here's an interesting trivia point I just found out yesterday. Did you know the grown up Ralphie from A Christmas Story is one of the elves in the beginning of the movie "Elf?" Google for "Peter Billingsley Elf" and you'll see which one. I've seen that movie numerous times & had no idea, since he's uncredited, and grown up. But he's in it a fair amount in the beginning, and once you see which elf he is, it's pretty obvious that it's Ralphie all grown up :).
Ralphie in "Elf".
And out of costume.