Kangnam is wowing fans with his weight loss transformation.

The popular star uploaded a before and after picture on his Instagram account, showing off his newly toned figure. He definitely looks a lot healthier as well. 

Kangnam apparently lost 15kg (~33 pounds) to achieve this transformation. The star promised back in May that he would go on a diet after rapidly gaining weight and it seems like he delivered on his promise.

Congratulations to Kangnam for achieving a healthier lifestyle!