Super Junior's Heechul turned 30 (31 in Korea) on July 10!

Of course, his fellow members didn't forget to congratulate Heechul. Ryeowook shared on his Twitter, "Happy Birthday, Heenim~~^^!!!! Our Heechul hyung is celebrating his birthday by himself~~~^^!!! Once you're discharged, let's comeback right away and promote together~!!! I miss Kim Heechul on TV~~~♥."

Henry also tweeted, "Heechul hyung!! I love you!! Happy birthday," along with a snapshot of Heechul celebrating his birthday. Unlike the Heechul fans are used to, he was camera shy and covered his face.

Good friend Simon D also seemed to have attended the birthday party with Henry and Yesung. He posted on his Instagram, "YESUNG & HENRY & SIMON D."

Heechul recently started Instagram, so follow him if you haven't already done so! Happy birthday and welcome to your wonderful thirties, Heechul!