Which got us thinking about other musicians who started so young. Countless pop and rock acts have transitioned from teen sensations to capable adults, but what can we learn from those evolutions?
Here's what we think each have to teach, and what artists like Justin Bieber could learn from them.
Signed to Motown at just 12 years old, Stevie Wonder quickly became an act to watch as he became one of R&B's elite. Unfortunately, in the wake of hits like "Superstition" and "You Are The Sunshine Of My Life," Wonder was involved in a serious car crash in 1973 that landed him in a coma. Fortunately, he awoke and recovered, going on to record and subsequently release "Fulfilingness' First Finale" in 1974. Lesson to learn: When the going gets tough, keep on working.
Donnie was only 15 years old when he joined forces with New Kids On The Block, but aside from destroying hotel rooms and canoodling with the ladies, the boy band kept things relatively clean. Seeing NKOTB as an escape from his family, Wahlberg used group's exposure as a stepping-stone into Hollywood — where he's racked up a stacked filmography. Today, he's not only still touring, but starring on "Bluebloods" with ‘80s poster boy, Tom Selleck. Lesson to learn: That musical launching pad can land you on bigger and better projects.
After scoring success on the country music scene in 1972 at age 12, Tanya Tucker went down a common path for teens in the limelight: she began drinking. Finally, her family convinced her to enter the Betty Ford Clinic in the 1980s to overcome her alcohol and cocaine addiction, and in 1986 she staged a comeback with her record, "Girls Like Me." She's also one of the few female "outlaw" country musicians — which only testifies to her clout. Lesson to learn: If your friends and family see something you don't, they might actually be onto something.
A cast member of The Mickey Mouse Club at age 11, Spears quickly landed herself on the international stage thanks to "…Baby One More Time" at age 17. What followed were years of tours, albums, interviews and the movie "Crossroads" before the singer spiraled out of control publicly in 2007 (which was marked by her infamous head-shaving incident). Now, however, she's back on the music circuit: performing, recording and judging musical hopefuls on Fox's "The X-Factor." Lesson to learn: Rock bottom can be inevitable — deal with it, better yourself, move on.
The youngest member of the Backstreet Boys, Carter got his musical start at the age of 12, and quickly cemented himself as a teen heartthrob and beloved member (see: every Tiger Beat poster owned by every '90s tween). Afterwards, the singer went on to try his hand at solo material, but raised eyebrows after a relationship with Paris Hilton and allegations of drug and alcohol abuse — which he later opened up about in 2009. Now clean and sober after being diagnosed with cardiomyopathy, he's back with BSB, who will release a new album this year because as fans, we want it that way. Lesson to learn: Health trumps all lifestyle choices — no matter how hard they can be to quit.
A Best New Artist Grammy winner in 1977 by the age of 19, Shaun Cassidy released two albums by 1978 and began starring in "The Hardy Boys" before losing the attention of his former fanbase. Not that he suffered all that much: after records release in the early ‘80s failed to make much of an impact, Cassidy switched to stage acting and appeared on Broadway and the West End, before returning to movies and television in the 1990s. He now produces TV, too. Lesson to learn: If you don't like what they're saying, change the conversation.
Perhaps one of the best advocates for mental health awareness, the 20-year-old former "Barney and Friends" star joined up with the Disney camp in the mid-2000s and began touring alongside the Jonas Brothers before appearing in movies like "Camp Rock!" Unfortunately, her grueling schedule began taking a toll, and after punching a female back-up dancer in 2010, Lovato entered a treatment facility where she was diagnosed with bipolar disorder, and where she began dealing with her eating disorder, self-mutilation and self-medicating. Now she speaks openly about her mental health, the importance of getting help and will be releasing an album later this year. You go, girl. Lesson to learn: Seeking help takes guts, but dealing with your own issues can inspire other people to do the same.
Lily Allen may have just welcomed her second daughter with husband Sam Cooper earlier this year, but when she dropped of high school to become a musician, she was crucified by the press, who branded her a wild child by the time her debut record came out in 2006. Thanks to cancelled performances and a party girl image, Allen's behavior began overshadowing her music, though that didn't last. Announcing 2009's "It's Not You, It's Me" would be her last album, she took a hiatus, opened a vintage store and is now raising her kids. Lesson to learn: Focus on what you want — ignore the public's/other people's demands.
Starting out as Cossette in a touring production of Les Miserables at age eight, Ashley Tisdale focused on acting before making her breakout as the infamous Sharpay Evans in 2006's "High School Musical." Thanks to the soundtrack's popularity, she was signed to Warner Bros. that same year and continued to record until 2010 when she returned to acting. Now, she has a production company (Blondie Girl Productions), and a role in the new "Scary Movie" — which is still trumped by her appearance in "Sons Of Anarchy" last year. (So not Disney-approved.) Lesson to learn: For best results, keep your nose to the grindstone, and take your career into your own hands.
Don't be so quick to walk away, JT fans, who followed his appearance on Star Seach (age 11) to his years as the curly-haired singer of *NSYNC. Somehow, J.T. avoided the misadventures of most teen stars by transitioning seamlessly from one project to another and leaving fans pining in the process. (Seriously, who do you think you are, making us wait six years between albums.) Now, he sings, he acts, he SNLs and he tours with Jay-Z — though we will still never forget the matching denim outfit he wore in 2000 with Britney Spears. Lesson to learn: Go at your own pace, befriend Jay-Z if you can, and never, ever wear more than one denim piece simultaneously.
Signed to a label at age 19 after singing a cover of "Locomotion," Kylie Minogue became one of Australia's biggest exports, topping charts across her own country, the U.K. and Europe until a haitus in the mid-'90s when she returned to acting. Then, the Fever hit: through songs like "Can't Get You Out Of My Head" (2001), she won back old audiences and earned new ones thanks to her adaptability to dance music and embracing today's pop sounds. That, and through her philanthropy work, which has seen her become an unofficial ambassador for breast cancer awareness. Lesson to learn: Stay adaptable and you'll only increase your staying power.
You may think we're in the midst of Miley Cyrus spiral, but while the 20-year-old former Disney star may be turning heads with her short hair and affinity for exhibitionism, she's arguably self-aware and embracing unique expression — which is more than a lot of pop stars can say. From the age of 11 onward, Cyrus has been earning attention through Hannah Montana (which she wrapped in 2011), and has been touring relentlessly thanks to her three studio albums. Estimated at having earned $250 million already, we think she deserves a chance to let loose fashion-wise. Lesson to learn: Your 20s are for making changes, taking risks and getting haircuts — you might as well take advantage of them while you can.
Arguably able to run circles around any of today's teens, Brenda Lee began recording at age 10 and continued right up through 13 ("Rockin' Around The Christmas Tree"), 14 ("I'm Sorry") and 17 ("Losing You") in 1963. In the ‘70s, the singer returned to her country roots and while she hasn't earned the same attention she did as a wee one, she's been inducted into the Country Music Hall of Fame, the Rockabilly Hall of Fame, and the Rock ‘n Roll Hall of Fame. Not too bad. Lesson to learn: Success when you're young means you've got the rest of your life to try your hand at, well, everything.
Sadly, not everyone can adjust to so much attention so young. As the lead singer of the ‘50s group, The Teenagers, Frankie Lymon found success before the age of 15. Eventually he went solo, his voice changed and his heroin addiction landed him in rehab. Unfortunately, he never got control of it: and after a brief stint in the army, he was found dead of a heroin overdose in his grandmother's bathroom. Lesson to learn: This story is the worst. Do not go down this path.
Ms. Poppins herself got her start at age 12 by singing "Je suis Titania" from Mignon at the London Hippodrome, where she continued singing for a year. Going on to make her TV debut in 1949, she eventually became a cast member on the BBC Radio comedy series, "Educating Archie." Two years later, in 1954 (the night before she turned 19), she made her Broadway debut, and it all went uphill from there. (Particularly in 1956, when she played Eliza Doolittle to Rex Harrison's Henry Higgins in "My Fair Lady.") Lesson to learn: Talent, hard work and kindness are the tripod of power. Or a mentor named Julie Andrews.