I've often wondered out loud to DBF exactly how many babies it took to fill the role of Aaron on LOST. Given that in four seasons he's only aged a few months in Island-time, I was positive they had to be using multiple babies.
Well now we know how many. At least for season 4. 19 babies! And only 3 of them were boys. Kinda reverse gender casting ala Shakespearean times, only rather than boys playing girls, it's girls playing a boy. Oh well. They're all cute.