A Tinkerbell Quick-Switch Trick?

The celebrity pet gossip world (oh yes, there is such a place) is aflutter with rumors that Paris Hilton's Chihuahua, Tinkerbell is not, in fact, Tinkerbell.

Paris recently brought a Chihuahua to the set of her new film "The Hottie and the Nottie" which she introduced as Tinkerbell, but when compared to old photos of her mutt it doesn't appear to be the same dog.

Her publicist denies a change, but could that be only because Paris doesn't know? Maybe this has been an "Invasion of the Doggy Snatchers" where her pooch has been replaced by the zombie-like pet of malicious alien pod people? Somebody warn her!

Somebody check Lacy Loo, Bit Bit and Lucky and make sure Britney Spears is OK!

And does Paris play the "Hottie" or the "Nottie?"