Lookit!! 0:57 :)
From what I've heard, there were two Joongbo shirts given to him. :o
One was given to Youngsaeng during the last song. He ran to Hyunjoong and gave it to him. (It was their wedding photo ---the sitting one)
Then the next one was during the encore. A female backup dancer saw it on the floor and she gave it to Hyunjoong. He had the shirt on his shoulder till the end of the encore. ^^ (This one was the family pic with Jins)
Do we have Thai Joongboers to confirm this? hehehe~
Youngsaeng caught a bag and this had the two shirts. He ran to HJ and showed one. Because it was HJ's part of the song, YS put the shirt on HJ's shoulder. Then when he ran back to his spot, he saw there's another shirt in the bag but he placed it on the floor because it was his part of the song. Luckily, this shirt got picked up by the female backup dancer and was given to HJ as well!
Anyways, I remember the good ol' Korean Music Festival days when he caught the shirt hehe~