The Jonas Brothers ... Jamie-Lynn Spears ... Miley Cyrus ... find out where they rank on our list.

Once upon a time, it was possible for a TV child star to get by on an impish smile and cute catchphrase.

Today's crop of kiddie performers don't have it so easy; they need to be double or triple threats who not only head up their own shows and/or TV movies, but sing, dance, star on the big screen, sell out concerts and launch clothing lines (despite some occasional personal missteps).

Here we count down the 20 hottest faves of the teen and tween pack.

Bindi Irwin, daughter of the late Steve Irwin, is making the rounds on American television shows this week. The 8-year old cutiepie is promoting her upcoming Discovery Kids series, Bindi the Jungle Girl. It sounds like a kid-version of The Crocodile Hunter. This week's press blitz includes appearances on The Ellen DeGeneres Show and Letterman, and she'll be giving a speech to the National Press Club in Washington, D.C. Her high-profile media appearances coincide with the premiere of her father's final documentary, Ocean's Deadliest, which airs on Discovery on January 21. Bindi's American tour includes a guest appearance dancing with The Wiggles in Los Angeles and New York. Bindi the Jungle Girl airs later this year on Discovery Kids, but a premiere date has not been announced.

I think it's important to note that Bindi Irwin started filming her Discovery Kids series before her father died. She probably would've received a bunch of American press attention even if her father was still alive, but it's logical to assume she's receiving more attention now that he has died.

Bindi Irwin, the darling 8-year old daughter of the late Steve Irwin, is going to hold off for a year before filming her wildlife series. Apparently a lot of people got pretty upset when they saw the recent news that Bindi was going to star in Bindi, The Jungle Girl for Discovery Kids. Critics complained that the little girl was being exploited by television producers because of her father's fame and headline-grabbing death from a stingray barb to his heart. The family's manager says the media speculation did not figure into their decision and that he needs a one-year vacation after the death of his close friend.

To be clear, Bindi's series for Discovery Kids started several months before Steve Irwin died. The series was to be about Bindi, with Steve making occasional appearances to do some crazy stuff. It was supposed to begin airing in January.

Bindi Irwin, the daughter of the late Steve Irwin, will carry on her father's legacy. The 8-year-old sweetheart is currently filming a documentary series for Discovery Kids. The wildlife series is called Bindi, The Jungle Girl. People.com has a quote from her that will tug at your heartstrings, she says, "I'm trying to get across the message that don't be afraid of animals, they're just put here on this earth to help the environment and everything like that." Steve Irwin will actually appear in some of the 27-part series, which he was filming when he died, but Bindi is the star. In fact, his death will never be mentioned during the series. Just like her dad, Bindi plays a girl who is fearless when it comes to nature. Bindi, The Jungle Girl will begin airing on Discovery Kids in January 2007