Park Bo-gum, Lee Joon-gi, Song-Song, and Park Sol-mi at IU concert

The '2017 IU Tour Concert' was held on the 9th and 10th at the Seoul Jamsil Stadium and many celebrities attended in support of "IU".

Song Joong-ki and Song Hye-kyo who recently got married were there on the 9th beside actress Park Sol-mi. Park Sol-mi had posted about the IU concert on her SNS in October. Song Hye-kyo had commented, "Me, too".

Song Hye-kyo and Song Joong-ki enjoyed the concert and Song Hye-kyo even posted a picture of IU on stage on Instagram.

Lee Joon-gi and Park Bo-gum went to the concert on the 10th. Kang Ha-na was next to Lee Joon-gi and they both starred in "Scarlet Heart: Ryeo" with IU.

Park Bo-gum was there and he was holding up a sign saying, "I will always be your firefly".

Lee Joon-gi posted a picture he took with IU later in the waiting room and said, "You created such a wonderful time for the crowd for five hours. I had a blast".

Kim Sae-ron also posted pictures from the concert and called IU a princess.

Lee Jong-suk, EXID's Park Jeonghwa, Park Hwan-hee, AOA Seolhyun and Hyejeong also attended the concert.