Popular actor Sung Dong Il (46) showed off a much slimmer image than before on the latest broadcast of KBS's 'Happy Together 3'

On the June 14th episode, the actor captured the attention of viewers as he showed off his remarkable 14 kg (~31 lbs) weight loss.

"I lost a lot of weight. I've become younger," he stated. He then explained the reason for his sudden change saying, "I lost the weight for my next project," leaving the viewers impressed with his determination.

Others that guested on this episode were Sung Dong Il's co-stars Song Sae Byuk, Kim Sung Ryung, and Lee Byung Jun from the upcoming movie 'King of Flattery'.

Source & Image: MyDaily via Nate