It was recently reported that IU would be a guest performer at Taeyang's concert. Just recently on September 16th, Taeyang tweeted a picture with the caption, "WITH I.U ^__^". �The photo shows a shy and embarassed IU with Taeyang's arm wrapped around her. The picture was presumably taken during a break at concert rehearsals. Looks like they are having a blast! I'm sure IU is enjoying the treatment, considering she's a huge Taeyang fangirl. The concert will take place on the 25th and 26th at KyungHee University's Hall Of Peace.