Justin Bieber, known for having the most followers on Twitter, broke yet another record on Tuesday, crossing the 40 million followers mark.

Justin Bieber showed his more grownup side during his performance on the first results show for "Dancing With The Stars: All Stars." Bieber kept his young fans up late on Sept. 25 to offer more crotch-grabbing and gyrating than usual in a head-to-toe leather outifit. He ended his performance with an intense stare into the crowd, it was reminiscent of shows by his mentor Usher and the late Michael Jackson.

Selena Gomez showed her sexy side in a tiny light blue bikini on Monday, Sept 17. In a series of photos taken by paparazzi, Gomez nonchalantly turned up the heat for the cameras when she laid on her back and shifts around in a series of casual, sexy poses while chatting on the phone, perhaps to her boyfriend Justin Bieber. View 10+ pictures of Gomez posing poolside in a bikini

Author E.L James can expect her fan base to widen to a much younger demographic. Justin Bieber started a rumor that he will appear in the film adaptation of James' best-selling erotic novel "Fifty Shades of Grey" during his guest appearance on the British late night talk show "The Jonathan Ross Show." The pop singer sparked the rumor on Saturday, Sept. 15. "They actually want me to be in the movie," said Bieber with a straight face referring to James' upcoming film.