Paris Hilton BUSTED -- Too Fast, Too Furious

Like an older, hotter Justin Bieber ... Paris Hilton got in some trouble today for speeding through a residential neighborhood in a super fancy car.

Unlike Justin, Paris was busted in Beverly Hills (she wouldn't be caught dead in the valley) ... and law enforcement sources tell us she was only going 42 in a 25. Not exactly breaking the sound barrier.

In the end, Paris got a ticket ... and left without being chased down by Keyshawn Johnson.