Singer Seo In Gook showed off his significantly changed looks.

On the 8th he posted on his Twitter "Diet... Let's do well in the press call today!" along with a photo.

In the photo Seo In Gook has lost so much weight that he looks like an actor. His sharp chin and high nose especially catches the attention.

Netizens who saw the photo commented "you lost a lot of weight", "wow your nose", and etc...

Photo Credit: Seo In Gook Twitter