Recent photos of the Song Il Guk’s triplets show how much they have grown since leaving The Return of Superman.
The triplets only left the show a year ago but they have already grown a lot since then.
The difference was even more noticeable after their father posted a throwback video of them as babies.
They started appearing on the show when they were only 2 years old, but they have just turned 5.
Even though it seems like the boys are growing up fast, they will always be babies to their parents.