Cody Simpson is not just Australia's answer to Justin Bieber -- he's blond, after all. Rather, he's a new-to-the-scene teen with a talent, style and swagger all his own.
Why He's Hot: He's an Aussie living in America, and girls love the accents!
What's Up Next: The music video for his new song, 'All Day,' followed by a debut studio album from Atlantic Records.
Exclusive: Watch Cody's visit to AOL's office.
Essential Listening: 'iYiYi'
Why He's Hot: He's an Aussie living in America, and girls love the accents!
What's Up Next: The music video for his new song, 'All Day,' followed by a debut studio album from Atlantic Records.
Exclusive: Watch Cody's visit to AOL's office.
Essential Listening: 'iYiYi'
Neilson Barnard/WireImage
You've seen her face on the screen -- Palmer is the star of Nickelodeon's 'True Jackson, VP' and the 2006 film 'Akeelah and the Bee' -- now let Keke Palmer blow you away with her stellar voice and saucy style.
Why She's Hot: She's seasoned. At just 17, Palmer is eight years into her singing career.
What's Up Next: A new album in 2011 -- title and date to be determined.
Essential Listening: 'The One You Call'
Why She's Hot: She's seasoned. At just 17, Palmer is eight years into her singing career.
What's Up Next: A new album in 2011 -- title and date to be determined.
Essential Listening: 'The One You Call'
Jim Spellman/WireImage.com
Selena Gomez is not just 'some Disney star' -- the actress/musician started Selena Gomez & the Scene, a pop band for which she is lead singer, in 2008.
Why She's Hot: Selena Gomez & the Scene beat Justin Bieber for Favorite Breakout Artist at the People's Choice Awards.
What's Up Next: The band's first full-production road project, the 'A Year Without Rain Tour' 2011.
Essential Listening: 'A Year Without Rain'
Why She's Hot: Selena Gomez & the Scene beat Justin Bieber for Favorite Breakout Artist at the People's Choice Awards.
What's Up Next: The band's first full-production road project, the 'A Year Without Rain Tour' 2011.
Essential Listening: 'A Year Without Rain'
Jason Merritt, Getty Images
From Cindy Lou Who in 'How the Grinch Stole Christmas' to fronting a rock band, the Pretty Reckless, Momsen is all over the board.
Why She's Hot: She pushes the envelope with racy photo shoots and sassy comments.
What's Up Next: Potentially, a position as poster girl for Madonna's 'Material Girl' clothing line.
Essential Listening: 'Make Me Wanna Die'
Why She's Hot: She pushes the envelope with racy photo shoots and sassy comments.
What's Up Next: Potentially, a position as poster girl for Madonna's 'Material Girl' clothing line.
Essential Listening: 'Make Me Wanna Die'
JPIstudios
First and last names are so played out, according to 19-year-old Christofer Ingle -- who prefers to be known as trend-setting acoustic pop-rock artist Never Shout Never.
Why He's Hot: Likely the only artist on the list to have been on MTV's 'TRL' -- which he was in 2008.
What's Up Next: Gracing the cover of Alternative Press as their 'Artist of the Year.'
Exclusive: Watch a Day in the Life with Never Shout Never.
Essential Listening: 'Can't Stand It'
Why He's Hot: Likely the only artist on the list to have been on MTV's 'TRL' -- which he was in 2008.
What's Up Next: Gracing the cover of Alternative Press as their 'Artist of the Year.'
Exclusive: Watch a Day in the Life with Never Shout Never.
Essential Listening: 'Can't Stand It'
Bryan Bedder, Getty Images
DeAndres Cortez Way -- known to the world as Soulja Boy -- has mastered the game as an accredited rapper and producer before he's even legally allowed to drink.
Why He's Hot: Why isn't Soulja Boy hot? From cameos to Billboard Hot 100 singles, he's done it all.
What's Up Next: Promoting his latest album, 'The DeAndre Way,' which dropped in Nov. 2010.
Essential Listening: 'Crank That'
Why He's Hot: Why isn't Soulja Boy hot? From cameos to Billboard Hot 100 singles, he's done it all.
What's Up Next: Promoting his latest album, 'The DeAndre Way,' which dropped in Nov. 2010.
Essential Listening: 'Crank That'
Jeff Christensen, AP
Jennette McCurdy played co-star to fellow 21 Under 21 list-maker Miranda Cosgrove on the Nickelodeon show, 'iCarly.' In real life, the blonde 18-year-old takes the reins with her own successful country music career.
Why She's Hot: She can transcend entertainment genres as a talented musician and actress.
What's Up Next: Touring through March.
Essential Listening: 'Not That Far Away'
Why She's Hot: She can transcend entertainment genres as a talented musician and actress.
What's Up Next: Touring through March.
Essential Listening: 'Not That Far Away'
Frank Micelotta, Getty Images
Greyson Chance made a name for himself with a jaw-dropping cover of Lady Gaga's 'Paparazzi,' which garnered millions of YouTube views before the Oklahoma native even hit his teen years.
Why He's Hot: He's got Ellen for a mentor, and you can't go wrong there -- she even created a record label just for him!
What's Up Next: On tour with Miranda Cosgrove through Feb. 24.
Exclusive: Watch Greyson interview with Popeater.
Essential Listening: 'Waiting Outside the Lines'
Why He's Hot: He's got Ellen for a mentor, and you can't go wrong there -- she even created a record label just for him!
What's Up Next: On tour with Miranda Cosgrove through Feb. 24.
Exclusive: Watch Greyson interview with Popeater.
Essential Listening: 'Waiting Outside the Lines'
AOL
Miley Cyrus has never been one to ride on the coattails of her famous father, Billy Ray. In fact, it's quite the opposite -- the 'Achy Breaky Heart' singer co-starred on Miley's Disney show, 'Hannah Montana' -- which shot the 18-year-old into her own musical success.
Why She's Hot: Like Taylor Momsen, Miley is constantly making headlines for her "risque" behavior.
What's Up Next: With her Disney days now behind her, the possibilities are endless.
Essential Listening: 'Party in the U.S.A.'
Why She's Hot: Like Taylor Momsen, Miley is constantly making headlines for her "risque" behavior.
What's Up Next: With her Disney days now behind her, the possibilities are endless.
Essential Listening: 'Party in the U.S.A.'
George Pimentel, WireImage
David Archuleta scored runner-up in the seventh season of 'American Idol,' but that was just the beginning -- the Utah native has since achieved musical success on his own -- not to mention an incredibly dedicated following.
Why He's Hot: His innocent face and undeniable charm makes all of the kids swoon.
What's Up Next: Continually spreading the sound of his latest studio album, 'The Other Side of Down.'
Exclusive: Watch a Day in the Life with David Archuleta.
Essential Listening: 'Something 'Bout Love'
Why He's Hot: His innocent face and undeniable charm makes all of the kids swoon.
What's Up Next: Continually spreading the sound of his latest studio album, 'The Other Side of Down.'
Exclusive: Watch a Day in the Life with David Archuleta.
Essential Listening: 'Something 'Bout Love'
David Livingston, Getty Images
Like a true Southern musician, Jordan Pruitt has been belting it out since the age of 4, when she started singing in church. Now, the Georgia-bred teen pop artist spreads her wings as a Hollywood Records recording artist.
Why She's Hot: She's friends with the Jonas Brothers.
What's Up Next: Her third studio album, later this year -- title and date to be determined.
Essential Listening: 'One Love'
Why She's Hot: She's friends with the Jonas Brothers.
What's Up Next: Her third studio album, later this year -- title and date to be determined.
Essential Listening: 'One Love'
Jason Merritt, Getty Images
What happens when you put together four spunky 13-year-old boys and tell them to make music? You get Prodigy, Roc Royal, Ray Ray and Princeton -- better known as Mindless Behavior.
Why They're Hot: They opened for Justin Bieber -- and they're just so cute.
What's Up Next: Opening Janet Jackson's 2011 tour.
Exclusive: Read Mindless Behavior's tour diary.
Essential Listening: 'My Girl'
Why They're Hot: They opened for Justin Bieber -- and they're just so cute.
What's Up Next: Opening Janet Jackson's 2011 tour.
Exclusive: Read Mindless Behavior's tour diary.
Essential Listening: 'My Girl'
Michael Ochs Archives / Getty Images
Like Greyson Chance, Charice was discovered via YouTube. And like Greyson Chance, she's now doing big things -- the 18-year-old Filipina star has a recurring role as Sunshine Corazon on Fox's 'Glee.'
Why She's Hot: Charice is the first solo Asian musician to reach the Top 10 on the Billboard top albums chart.
What's Up Next:'Glee,' Season 2, to pick up Feb. 8.
Exclusive: Read why Charice is one to watch.
Essential Listening: 'Pyramid' (feat. Iyaz)
Why She's Hot: Charice is the first solo Asian musician to reach the Top 10 on the Billboard top albums chart.
What's Up Next:'Glee,' Season 2, to pick up Feb. 8.
Exclusive: Read why Charice is one to watch.
Essential Listening: 'Pyramid' (feat. Iyaz)
FOX
Ah, the only Jonas Brother still sitting under 21! In the wake of the Jonas trio's success, the youngest brother, Nick, started his own musical venture -- Nick Jonas & the Administration.
Why He's Hot: Young Jonas is the face of a campaign that encourages young people to manage their diabetes.
What's Up Next: Nick is currently in the studio, honing his solo career.
Essential Listening: 'Who I Am'
Why He's Hot: Young Jonas is the face of a campaign that encourages young people to manage their diabetes.
What's Up Next: Nick is currently in the studio, honing his solo career.
Essential Listening: 'Who I Am'
Stephen Lovekin, Getty Images
We were all shocked when 9-year-old Willow Smith dropped onto the music scene in 2010 with her fresh single, 'Whip My Hair.' Now, at just 10, she's signed to Jay-Z's label, Roc Nation, and is prepared to shake things up with even more hit music up her sleeve.
Why She's Hot: Cute as a button and the spawn of Will and Jada Pinkett-Smith -- need we really say more?
What's Up Next: A new single, '21st Century Girl,' and a tour with Justin Bieber.
Exclusive: Watch what Willow has to say about hair whipping.
Essential Listening: 'Whip My Hair'
Why She's Hot: Cute as a button and the spawn of Will and Jada Pinkett-Smith -- need we really say more?
What's Up Next: A new single, '21st Century Girl,' and a tour with Justin Bieber.
Exclusive: Watch what Willow has to say about hair whipping.
Essential Listening: 'Whip My Hair'
John Sciulli, WireImage
As if Justin Bieber needs an introduction! At just 16 (he turns 17 March 1), the Biebs has changed the face of pop music as we know it.
Why He's Hot: It's the hair.
What's Up Next: World domination? Oh, and an international tour -- if there's time.
Essential Listening: 'Pray'
Why He's Hot: It's the hair.
What's Up Next: World domination? Oh, and an international tour -- if there's time.
Essential Listening: 'Pray'
Charles Sykes, AP
Miranda Cosgrove went from supporting actress on Nickelodeon's 'Drake and Josh' to star of the teen sitcom 'iCarly' -- and the 17-year-old has shown that she has what it takes to master preteen television programming. Now she's ready to shine in her music career!
Why She's Hot: Cosgrove doesn't need support from any famous family members -- she was discovered by a talent agent!
What's Up Next: Keeping up with her new single, 'Dancing Crazy,' which grows more popular daily.
Essential Listening: 'Kissin U'
Why She's Hot: Cosgrove doesn't need support from any famous family members -- she was discovered by a talent agent!
What's Up Next: Keeping up with her new single, 'Dancing Crazy,' which grows more popular daily.
Essential Listening: 'Kissin U'
Jason Merritt, Getty Images
Demi Lovato saw fame from her roles in 'Camp Rock,', 'Sonny With a Chance' and even 'Barney & Friends' -- all before reaching adulthood -- so it's no huge surprise that she would also be successful in her musical venture. But for Lovato to see her only two studio albums both debut in the Top 10 of Billboard 200 was unprecedented.
Why She's Hot: Uh, hello -- we said she was on 'Barney'!
What's Up Next: A third studio album, expected Spring 2011.
Essential Listening: 'Don't Forget'
Why She's Hot: Uh, hello -- we said she was on 'Barney'!
What's Up Next: A third studio album, expected Spring 2011.
Essential Listening: 'Don't Forget'
jpistudios
Sean Kingston just barely makes the list -- he turns 21 Feb. 3 -- but the Jamaican-American singer/rap star has produced work well beyond his years.
Why He's Hot: He's respected in the biz -- the Florida rapper has worked with the likes of Kanye West, Nicki Minaj and T-Pain.
What's Up Next: Promoting his new single, 'Party All Night (Sleep All Day).'
Essential Listening: 'Letting Go (Dutty Love)' feat. Nicki Minaj
Why He's Hot: He's respected in the biz -- the Florida rapper has worked with the likes of Kanye West, Nicki Minaj and T-Pain.
What's Up Next: Promoting his new single, 'Party All Night (Sleep All Day).'
Essential Listening: 'Letting Go (Dutty Love)' feat. Nicki Minaj
Neilson Barnard, Getty Images
The New Boyz -- Legacy and Ben J -- are only 19, but the duo showed the world they were here to stay with their hit, 'You're a Jerk,' which started a "Jerk" dance craze in 2009.
Why They're Hot: They're innovative, yet adaptive -- and not afraid to sport a pair of skinny jeans.
What's Up Next: A new album, 'Too Cool to Care,' coming this spring.
Exclusive: Watch New Boyz' viral video.
Essential Listening: 'Back Seat' (feat. Dev)
Why They're Hot: They're innovative, yet adaptive -- and not afraid to sport a pair of skinny jeans.
What's Up Next: A new album, 'Too Cool to Care,' coming this spring.
Exclusive: Watch New Boyz' viral video.
Essential Listening: 'Back Seat' (feat. Dev)
Frederick M. Brown, Getty Images
Emily Osment is a 'Hannah Montana' star with a hint of Miley musical influence, but she's got spunk and sassiness that is 100 percent Emily.
Why She's Hot: She's not afraid to show her fangs -- oh, and she can probably see dead people.
What's Up Next: Promoting her latest single, 'Lovesick,' and new music video which premiered a few weeks ago.
Essential Listening: 'Let's Be Friends'
Why She's Hot: She's not afraid to show her fangs -- oh, and she can probably see dead people.
What's Up Next: Promoting her latest single, 'Lovesick,' and new music video which premiered a few weeks ago.
Essential Listening: 'Let's Be Friends'
Bauer-Griffin
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