Eunhyuk tweeted this picture of him covered in cake :P wearing a cute one piece Luffy tshirt, after a long search turns out that this tshirt is a collaboration tshirt between Uniqlo X One Piece
You can buy the tshirt here @ Uniqlo store UK for £12.99
Can not take the picture or information out!!
Credits: @allrisesilver + UNIQLO