Joe Jonas stayed relatively clean of reputation, until he revealed his drug use (with Demi Lovato and Miley Cyrus!) in New York magazine. No one likes a rat, Joe.
Even Stevens star Shia LeBeouf has endured a rough coming of age. His strange run of behavior included ramming his car into a neighbor's car, a drunk-driving accident, plagiarizing, and a performance art piece. To be continued!
Victorious stars Ariana Grande and Victoria Justice reportedly feuded on the set, which they basically clarified with their Twitter wars.
Where to begin with Miley Cyrus' scandals? She started off with a risque Vanity Fair photo shoot, and these days she's grinding on Robin Thicke and sticking her tongue out. A lot.
Jamie Lynn Spears got pregnant at age 16, while she was starring on Zoey 101.
Wizards of Waverly Place star Selena Gomez recently revealed that she spent some time in rehab in late 2013, for personal issues.
Zac Efron made his name thanks to High School Musical, but he raised eyebrows in 2013 when he announced he had two stints in rehab.
Lee Thompson Young, who starred on The Famous Jett Jackson as a kid, tragically committed suicide in 2013.
Sam & Cat star Jennette McCurdy had sexy photos leaked by a boyfriend in 2014.
Dylan Sprouse, who grew up with his twin brother on The Suite Life of Zack and Cody, had a series of semi-nude photos revealed in 2013.
Zac Efron wasn't the only High School Musical star with a scandal. Naked photos of his girlfriend at the time, Vanessa Hudgens, were exposed in 2007 (and 2009, and 2011).
Sonny with a Chance star Demi Lovato entered rehab in 2010 for an eating disorder, depression, and cutting.