According to News1, IU will be singing at Jiyeon and Hwang JaegyunŌĆÖs wedding set for the 10th. IU and Jaeyeon, both born in 1993, became besties through the variety show Heroes, which aired in 2010-2011. The two have constantly shown off their friendship, and in September, Jaeyeon and her fiance were seen sitting side by side at IUŌĆÖs concert. And this time, IU will be keeping her best friendŌĆÖs side on the happiest day of her life. Meanwhile, Jiyeon and professional baseball player Hwang Jaegyun will be tying the knot at the Shilla Hotel in Jung-gu, Seoul on the 10th. The two went public with their relationship in February. Source (1)