A$AP Rocky performed on The Late Show with David Letterman the other day as he was making his rounds promoting his newly released album, LongLiveA$AP. The rapper, who's a fan of Raf Simons, wore a very rare $1,800 pair of De Stijl Lego Multicolored Hiking Boots from the label's spring/summer 2008 collection. What do you think of the boots?