Lourdes Ciccone Leon
Age: 13
Lourdes—also known as Lola—has style and sass built into her DNA, being Madonna's daughter and all. But who knew she'd become such a trend-inspiring hipster so early on? She certainly doesn't look (or act) like she's 13, but if you could play dress up in the Queen of Pop's closet, you'd dress a lot older, too.
Connor Cruise
Age: 14
Tom Cruise's only son is already making a name for himself in the Biz—he played the younger version of Will Smith in Seven Pounds, and now he's tapped for the remake of Red Dawn. Just give this too-cute dude a few more years and he's bound to be more drooled over than his dad is nowadays.
Tallulah Belle Willis
Age: 15
Having superhot ‘rents totally gives you an advantage when it comes to making it in T-town, that's fer sure. Demi Moore and Bruce Willis' youngest daughter got involved in some scandal when Perez Hilton posted a pic of Tall dressed in a skin-baring frock and mama Demi was none too happy. Your first controversy surrounding your sexuality at age 15? You've made it, hon!
Miley Cyrus
Age: 16
Though she's the biggest squeaky-clean Disney kid around, M.C. dates older men and ain't afraid of dressing like jailbait. She's been sent to pop-culture detention more than any other teen in H'wood—girl totally forgets she's still just a kid and prolly shouldn't be gyrating on stripper poles or taking naughty pics of herself and posting them online (though, truthfully, nobody at any age should be doing that).
Taylor Momsen
Age: 16
One of the youngest dolls on Gossip Girl certainly doesn't look it—not only is Tay a fierce frontwoman for rock band the Pretty Reckless, T.M. covers her youthful looks with too much makeup and sorta slutty getups. Maybe hanging out in rock clubs she's too young to drink in is a bad influence, no?
Taylor Lautner
Age: 17
It's gotta be illegal to think a 17-year-old is one of the hottest men in H'wood, but we just can't help fawning over this Twilight hunk. His dimples say he's just a kid, but his sizzling abs (that he loves to show off in almost every photo shoot) tell a completely different story.
Demi Lovato
Age: 17
Dem goes hand-in-hand with almost every other Disney hon on this list—is this the new Brat Pack or what? Li'l Miss Lovato's had her own share of public woes: Rumors floated around that Demi was a cutter (which her rep has denied) and that she had a major Twitter-aided flirtfest (and major fallout) with Miley's big bro, Trace Cyrus.
Selena Gomez
Age: 17
While Miley's off stirring up some trouble, Selena's been nothing short of an angel, which we're sure makes Disney breathe a sigh of relief. Still, the Wizards of Waverly Place star manages to look a decade older than 17, plus she squeezed in a short-but-sweet romance with other hottie teens Taylor Lautner and Nick Jonas. Not too shabby for a gal constantly in Miley's shadow.
Nick Jonas
Age: 17
The youngest JoBro (besides Bonus Jonas Frankie, ‘course) sure gets around—dating Selena Gomez and Miley Cyrus, Nick's got more gals swooning over him than any legal-age pop star around, including his two brothers. Can't wait to see how long that purity ring lasts when Nick's old enough to pick up girls in bars.
Taylor Swift
Age: 19
While Taylor doesn't shy away from supersexy outfits while walking the red carpet, this class act never verges on the skankywear other teens love to don to appear older. This country singer's elegance (who knew?) makes Taylor far more mature than her older T-town colleagues—Kanye West, we are so looking at you.
Kristen Stewart
Age: 19
The Twilight beauty's managed to nab the most desired heartthrob around, Robert Pattinson, and one of the most coveted roles—Joan Jett in The Runaways. Actresses of any age would kill for either of those! But we know K.Stew's still a teen at heart with her beloved Converse sneaks and her general (and adorable) awkwardness. Isn't it why we love her?