Happy birthday Jaejoong!
The JYJ star celebrated his birthday party in Seoul last night with friends - and thanks to pal Hong Seok Cheon, we can see what they got up to.
Actor and former model Hong, who came out as gay in 2000, uploaded photos to Twitter, writing: "At Jaejoong's birthday party. It was really fun.
"All of Jaejoong's friends came to the party and celebrated."
In the pictures, Jaejoong, who turns 27 on January 26, was clearly having fun with his group of friends, who included Song Seung Hun, Jung Seok Won and director Lee Jae Han.
As the night went on, Hong, 41, uploaded more pics, revealing a slightly tipsy-looking Jaejoong.
A rep for the singer, who released debut solo album "Mine" earlier this month, celebrated early because he's "working all weekend and has no time for any other celebrations".