Yoo Jae Suk�showed off his 'Happy Together' birthday cake in honor of his 42nd (41 international age) birthday on August 14!

SEE ALSO: Jung Jun Ha sends his birthday wishes to the 'nation's MC' Yoo Jae Suk

Yoo Jae Suk posed with his 'Happy Together' family�Park Myung Soo, Park Mi Sun, Shin Bong Sun, and Heo Kyung Hwan, in front of his birthday cake specially prepared by the staff. The birthday cake is one of a kind as it is an exact replica of the 'Happy Together' set with Yoo Jae Suk sitting politely in his sauna uniform.�

Fans also trended #Happy42ndYooDay to help show their love! Happy Birthday, Yoo Jae Suk!