Bieber, who turns 25 on March 1, has been through a lot in his decade or so in the spotlight. But it's not anything more disastrous than a fair few of these teen celebrities.
From Leif Garrett to Will Smith , here are 12 of the most iconic teen idols in history, and what they're doing in 2019.
Justin Bieber was discovered on YouTube in 2008, and set off Bieber Fever.
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After posting covers of famous songs on YouTube, the then-13-year-old was discovered by industry powerhouse Scooter Braun, and flown to Atlanta, Georgia, to sing for Usher.
Throughout the 2010s, Bieber skyrocketed to be one of the most if not the most famous people on Earth. "Beliebers" followed his every move, tracked every girl he was spotted with, and propelled him to four No. 1 albums.
A decade later, Bieber is married to Hailey Baldwin, and fans are eagerly awaiting new music.
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The Beatles were the original British boy band and Paul McCartney was at the center of Beatlemania.
Twenty-two-year-old McCartney especially garnered a lot of attention, due to his front-man position in the group as lead singer and bassist.
McCartney is still performing and releasing music more than 50 years later.
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In fact, his 2018 album "Egypt Station" was his first to debut at No. 1 ever and his first to top the charts at all since 1982's "Tug of War."
Mario Lopez stole hearts everywhere during the iconic 90s show "Saved by the Bell."
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As a kid, Lopez appeared in the show "Kids Incorporated" for two years. But his big break came in 1989 when the 16-year-old began starring on seminal high school sitcom "Saved by the Bell" as the prototypical jock and ladies man AC Slater.
Lopez stayed on the show, appeared in "The College Years," and two "Saved by the Bell" TV movies. After the show ended, Lopez continued to act, mainly in lesser-known movies and television series.
Lopez is mainly known for his hosting duties now, including "Extra" and his own radio show.
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Since 2012, Lopez has been married to dancer Courtney Mazza. The two announced in January 2019 that they're expecting their third child , joining daughter Gia and son Dominic.
Donny Osmond quickly became the most popular Osmond brother during the 70s.
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Throughout the '70s, Osmond continued to drive fans wild with his perfectly feathered hair and wholesome, family-friendly vibe. But seemingly overnight, his overly perfect image turned uncool during the '80s, and he took a bit of a career hiatus.
Osmond still performs in Las Vegas alongside his sister, Marie.
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He also just came in second place on the bizarre singing competition "The Masked Singer," where he was revealed to be disguised as a peacock.
Justin Timberlake was many a fans favorite from boy-band *NSYNC.
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Timberlake remains an A-lister after over two decades in the industry.
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Plus, he's branched out to acting. He appeared in "The Social Network," "Friends with Benefits," and "Inside Llewyn Davis," to name a few.
Frankie Avalons first No. 1 single came out when he was 19 years old in 1959.
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Avalon was an in-demand singer and actor during the '60s, known for his smooth voice and squeaky-clean image.
Avalon now focuses on his line of health and cosmetic products, and his cookbooks.
Avalon was introduced to a new generation of fans during his role in 1978's "Grease" as the Teen Angel, in which he sings "Beauty School Dropout."
However, in his later years, he's pivoted away from the music industry and now concentrates on his business, Frankie Avalon Products , which specializes in pain-relieving products. He also released a cookbook, "Frankie Avalon's Italian Family Cookbook." The 78-year-old is also still touring .
Leif Garrett was both a successful musician and actor.
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Garrett released his first album two years later in 1977, despite having no musical training. His immense popularity was enough to overshadow this lack of training, and he released four more through 1981 .
He later returned to acting and appeared in '80s classics "The Outsiders" and "Thunder Alley."
Garrett has been through struggles with drug abuse in his adulthood.
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Garrett has been arrested multiple times throughout his career for drug possession, driving while intoxicated, and leaving court-mandated rehab. The 57-year-old also appeared on season four of "Celebrity Rehab with Dr. Drew," which was also his last on-screen appearance to date.
Will Smith was originally a rapper before starring in "The Fresh Prince of Bel-Air."
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Smith originally burst onto the scene as The Fresh Prince, a rapper, in the late '80s with frequent collaborator DJ Jazzy Jeff. Their best-selling album, "He's the Rapper, I'm the DJ" peaked at No. 4 on the Billboard 200 , and has been certified triple platinum.
But Smith's star-making role came in 1990 when he was 22 and cast in "The Fresh Prince of Bel-Air," playing a fictionalized version of himself as a teenager who moves across the country to the affluent suburb of Bel-Air after getting into fights in his hometown of Philadelphia.
Smith was named "the most powerful actor in Hollywood" by Newsweek.
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Plus, he's part of a bona fide Hollywood dynasty now. His wife, Jada Pinkett Smith, alongside their daughter Willow and Pinkett Smith's mother Adrienne Banfield-Jones star on Facebook Watch talk show "Red Table Talk," and their son Jaden is a successful musician and actor in his own right.
John Travoltas singing and dancing skills put everyone under his spell in the 70s and 80s.
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His star continued to rise as he booked arguably the two most iconic movies of his career back to back: "Saturday Night Fever" in 1977 and " Grease " in 1978.
Travolta has had an interesting career since then.
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During the '80s, his career experienced a downturn after he starred in multiple financial failures, including "Perfect" and "The Experts."
Travolta's career had a resurgence after parts in "Pulp Fiction," "Face/Off," and "Phenomenon," but his time as a teen idol was over.
Leonardo DiCaprio rocketed to success after getting nominated for an Oscar at 19.
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Leonardo DiCaprio is one of the most highly celebrated actors of his generation.
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Shaun Cassidy was one of the biggest pop stars of the 70s.
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He achieved continued success with more covers, such as "Do You Believe in Magic?" and "That's Rock 'n' Roll."
Cassidys now more focused on behind the scenes roles.
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Cassidy, 60, stopped producing music in 1980 after his album "Wasp" failed to chart. He then began to appear on Broadway and on TV, starring in "General Hospital" and in miscellaneous other shows.
Jared Letos portrayal of Jordan Catalano in "My So-Called Life" cemented his teen icon status.
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The actor soon became an indie icon , appearing in "Girl, Interrupted" and "Fight Club," and founding his own rock band, Thirty Seconds to Mars.
Leto is now more of a polarizing figure in pop culture.
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