“Maybe I’m hosting and performing on SNL…maybe. :)” Justin Bieber teasingly tweetedyesterday. The bible subsequently confirmed that the Biebs will indeed follow in the footsteps ofBruno Mars last fall, serving as both host and musical guest for the Feb. 9 episode of the show. The appearance is timed with the Jan. 29 release of Believe Acoustic. And don’t forget, The Lumineers and the dreamy Jennifer Lawrence will team up on SNL’s first show of 2013 next weekend (1/19), followed a week later by the pairing of Adam Levine (as host) and Kendrick Lamar. [HitsDailyDouble]