This IU photo contains
business suit, well dressed person, suit, pants suit, pantsuit, and concert.
There might also be
dress suit, full dress, tailcoat, tail coat, tails, white tie, white tie and tails, suit, suit of clothes, and three piece suit.
IU's performances from the Melody Forest Camp Concert already (notably The Moon Song and Friday), but here are some more fancams of other songs she sang at the concert . These fancams were taken by Spinel