It's June 4 in South Korea, meaning it's the birthday of one JYJ's Yoochun! �He has now turned 28 (International age, 29 in Korean) and while he definitely has matured into an even handsomer man, he still has that youthful vibe with the adorable smile that has won hearts over from all over the world. �

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Fans immediately took to Twitter, hashtagging "#??????????? (Happy birthday to the shining Yoochun)"! �Make sure you wish him happy birthday on Twitter, as well.

Happy birthday, Yoochun!