Seo In Guk's photos from 4 years ago has been revealed.

Recently, an online community uploaded photos of the star with the title 'Seo In Guk from 4 years ago.'

The photos reveal what the heartthrob actor looked like back in 2009, when he tried out for Mnet's 'Super Star K.'�Also, it also has photos from Seo In Guk's recent hit drama on tvN called 'Reply 1997' that has recently received a lot of love for its dynamic cast and interesting plot.

It looks like he's been going on a fierce diet since his debut; where once he had a little extra meat, he now has chiseled good looks!

Source: X Sports News via Nate