On September 17 and 18, IU held her concert 'The Golden Hour' at Jamsil Olympic Stadium, Seoul.

According to IU's agency, around 90 performers appeared on stage with IU, with approximately 1,400 staff members gathered to prepare for the 2-day event.
In order to distinguish the staff members from the audiences, a custom-made T-shirt was given to all staff members.
After the concert's success, the T-shirts were suddenly being re-sold in multiple online resale platforms.

In order to fix this unexpected situation, some fans requested IU's management agency, EDAM Entertainment, to make the T-shirt as an official merchandise so that they can purchase it at a right price.

(SBS Star)