The oldest in Super Junior's maknae line was born on June 21st,1987. He turned 28 internationally and 29 in Korea, and fans celebrated by, among other things, trending HappyRyeowookDay on Twitter.

SEE ALSO: Misinterpretation corrected: NewJeans not in contract battle with HYBE, lawyer confirms

Also, the staff of SM Entertainment sent Ryeowook's radio show 'Super Junior's Kiss the Radio' a cake and some Vintage Dom Perignon for his birthday. 
 

Tip: CocoELF