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What was supposed to be a celebration turned into the "worst birthday," the freshly minted 19-year-old Tweeted Friday. Why the sad face? After shooting down rumors he partied in a club with underage Jaden Smith, 14, he blamed his bad night on "dummies pushing over my fans." Then Monday brought actual drama: The Biebs showed up almost two hours late to his Monday concert at the O2 Arena, leaving fans fuming and resulting in a Twitter apology.
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She's a singer, an actress ... and a midnight toker? While kicking off her 19th birthday in 2011 at a Hollywood bash thrown by Kelly Osbourne, Cyrus was treated to a cake made in tribute to reggae legend and pot advocate Bob Marley. "You know you're a stoner when your friends make you a 'Bob Miley' cake. You know you smoke way too much f–cking weed," she said in a video taken at the private party. A rep for the starlet later called the incident a joke, saying, "Miley was being sarcastic."
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ANGUS T. JONES
More than a year after became household terms, the 19-year-old Two and a Half Men star pulled, dare we say, a Charlie Sheen last November. In a rant just as surprising as Sheen's 2011 meltdown, Jones pleaded with Men's viewers in a YouTube video, "Please stop watching it. Please stop filling your head with filth." Just one day and a whole lot of heat later, he issued an apology for degrading "the extraordinary opportunity of which I have been blessed."
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Yet another birthday to remember: Fresh off his split from Taylor Swift, the One Direction hunk spent his 19th birthday in February 2013 with a very different lady: a stripper. But it was far from sexy, he said of his wild night on the London club circuit. "I was in stitches," he told the U.K.'s Sun. "It was really funny."
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The 2009 Grammys marked the beginning of a highly publicized domestic violence drama between Brown, then 19, and Rihanna, then 20, who are once again a couple. The rapper was ultimately charged with two felonies for assault and making criminal threats. "I am very saddened and very ashamed of what I have done," he later apologized in a video message.
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Now, she's a happily married mother of one. But then? After dating for six weeks, the once-troubled star tied the knot at 19 with Jeremy Thomas, an L.A. bar owner 12 years her senior. "Usually people live together first and then get married," she said of her 1994 wedding. "I guess we're doing it the old-fashioned way. Kind of." The newlyweds split after two months, with Barrymore finding true love 18 years later with now-husband Will Kopelman.
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In the early stages of what became a dizzying downward spiral, Lohan came clean about her battle with bulimia, drugs and personal relationships in her February 2006 Vanity Fair cover story. "I was making myself sick," Lohan, 19 at the time, said in the confessional interview, which hit newsstands two days after she was hospitalized in Miami for an asthma attack.
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These days, Osbourne has stepped out of Ozzy and Sharon's shadow as a red carpet correspondent for E!'s Fashion Police. But in 2004, she entered rehab in Malibu for the first time at 19 after drugs and alcohol threatened to destroy her career. Although it wasn't her only trip to rehab, she told PEOPLE in March 2009, "I just want to be happy. Anything is better than the way it was."