Pics: Kanye West stops smiling as soon as he spots paparazzi..lol

Kanye West was caught smiling while watching a basketball game in Chicago on Sunday night (right), but as soon as he noticed cameras capturing the moment, that smile turned into a frown immediately (left). Lol. More photos after the cut.

He also gave an impromptu performance to the audience at the game.

Photo credit: vine video..