A lot of artists have been covering [1] Justin Bieber, but this has to be one of the best yet. Some of your favorite celebrities proved they were the ultimate Beliebers as they performed a dramatic reading of the singer's hit single "Sorry." From Nick Jonas [2] to John Legend [3], these priceless reactions will literally make you LOL. See the full video above, and then check out 14 times Justin said sorry in 2015 [4].