You might be wondering who is that lean and chic, young guy chilling on the rooftop? Why, it's none other than singer Yoo Seung Woo!

It's been revealed that he's lost a total of 7 kg (approx. 15 pounds)! Now instead of his cute, chubby cheeks, he's looking more grown up with his chiseled features.

His company's side stated, "Yoo Seung Woo is an artist like Janus (the Roman god with two faces) with both the images of a young boy and a young man. This comeback will be an album that breaks free from his confined mold. You'll be able to see his inherent potential and meet the best producer and staff. You'll be able to musically and visually see a new and matured Yoo Seung Woo."

SEE ALSO: National cyclist Kim Keun Woo, son of actress Ra Mi Ran, joins 'Mungchyeoya Chanda 4'

His comeback is set for July 29! How do you think he looks in his new photos?