JoJo: Hyde's Resident Jailbait

She's only 15 and already hitting the clubs famous for the likes of Paris Hilton and Lindsay Lohan.

Though a sign over the entrance clearly says, "21 & OVER WITH ID," teen pop tart Joanna "JoJo" Levesque was spotted coming out the Hollywood hot spot last night.

While she could get some older men into trouble, the club gets off scott free from any wrongdoing - their liquor license allows all ages to enter since they're considered a restaurant.

TMZ is also told JoJo had a trusty adult chaperone with her -- her mother.