Miley Cyrus' 10-year-old younger sister Noah and Will and Jada's 9-year-old (she'll turn 10 on Halloween) singing superstar Willow have a lot in common... they both come from famous families and they're both growing up pretty quickly!

Willow Smith just released her single "Whip My Hair" and has signed to Jay-Z's record label Roc Nation. She also made her acting debut alongside dad Will in I Am Legend and later co-starred in Kit Kittredge: An American Girl AND voiced a character in Madagascar: Escape 2 Africa.

Noah Cyrus appeared on Miley's Disney show Hannah Montana, the direct-to-DVD movie Mostly Ghostly and had a main role in the animated English version of Ponyo. Plus, we kinda think the future tween has been dressing somewhat inappropriately for her age - yes, that includes wearing a padded push-up bra out in public with her mom and sis!

Willow, at least, dresses her age when stepping out with her family. But isn't 9 or 10 too young to start becoming famous? Especially when both families are already familiar with the celebrity world and know how hard it can be at such a young age?

Now that Miley has quit her cash cow Disney series Hannah Montana, Tish Cyrus is turning to her youngest, Noah, to try and create the next tween phenom.

Tish took the ten-year-old, who looks as if she dyed her hair darker for a more serious look, to an audition yesterday in Beverly Hills.

Let's hope (for her parents' sake?) that she nailed it!

Just what every pre-tween girl needs ... a slutty can-can dress! Miley's sister Noah teamed up with fellow Disney star Emily Grace to create Ooh La La Couture.

Ooh La La, indeed!

Just young fun or is Noah a little advanced for her age, singing about beer and "being crunk"?