Jack & Jones Longsleeves : S29.00 [BUY HERE]
Honestly, I am not so sure about this ID but I think that even if it's not really a Jack & Jones that the glorious Lee Jonghyun (sorry, biased!) wore on his way to L.A. this afternoon, the one we've shared will be a good alternative. ^^
What do you think?
Oh! And thanks to Xiaohun for the fan-taken photo!