WINNER's Kang Seung Yoon�celebrated his 20th birthday (Korean age: 21) today on January 21!�

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The idol star, who's known for his bad boy demeanor, put on the adorable face above just for his fans. He also handwrote and shared a message on WINNER's official LINE: "Thank you so much for congratulating Seung Yoon on his 21st birthday~^^. Considering how much you've congratulated me, I'll become an amazing artist!! Thank you <3 I love you <3."

Kang Seung Yoon is currently starring in his group's reality show 'WINNER TV'. Are you looking forward to WINNER's official debut?