Use your art to explore your wild side. Barrymore credits the movie "Poison Ivy," in which she played a teenage seductress, for helping her transition from child star to adult actress. It was a box office dud, but from there Barrymore could secure more adult roles that eventually catapulted her back on the top.
From "Baby" to "Boyfriend," Bieber's sound has grown up a bit, but he is still focusing on bubble gum romance. How about for the next album focus on some more adult themes if he really wants to be one—think Usher singing about adultery in "Confessions" or Christina Aguilera exploring insecurity in "Beautiful."
Cover up! This is a lesson Barrymore learned a little late. Starting at the age of 17 she posed nude for a number of magazines and ads, and even flashed David Letterman on his show. Her godfather Steven Spielberg sent her a quilt and pictures from her Playboy shoot that he had digitally altered to put clothes on her, with a card that said, "Cover up!"
Likewise, photograph after photograph of Bieber shirtless on the street, shirtless at the airport, shirtless in the hospital aren't helping his image. At the very least, take Olivia Wilde's advice, Justin: Put some clothes on.