Usher, Jaden Smith, B.o.B, Janelle Monae and Lady Antebellum will also perform on February 13. By Gil Kaufman Justin Bieber and Usher Photo: Kevin Mazur/ WireImage While Willow Smith is the one who made music headlines with “Whip My Hair” last year, it’s her brother, “Karate Kid” actor Jaden Smith, who will take the stage at the upcoming 53rd Grammy Awards in a special performance alongside Usher and Justin Bieber. The trio joins a list of new performers added to the show on Thursday (January 20) that will also include another power trifecta made up of B.o.B, Bruno Mars and Janelle Mon
