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"I'd make the argument that Tinkerbell represents more than companionship," says CPA David Rogers of ActorsTaxPrep in Los Angeles.

"At this point, I'd imagine there are likely to be events that Paris is absolutely required to bring little Tinkerbell along, and so the dog then becomes a marketable part of her image."

In 2005, Hilton introduced $25 Chihuahua-sized dog collars, a move that could easily help explain away a portion of the pooches grooming, wardrobe and kibble as part of the cost of doing business.

As Paris explains in product literature: "In addition to my own sense of style, I think a lot of people admire Tinkerbell's look as well, which is why I decided to include a glamorous pet collar as part of the new collection."

Still, you'll be wearing an entirely different sort of collar — personally fitted by IRS agents — if you try to claim your pet as a dependent, even if your furry friend is otherwise considered a member of the family.

Can George Clooney Write Off Getting Fat?

Like a lot of stars, George Clooney has traded on his good looks, especially earlier in his career, when he played a hunky doctor on "ER." However, that doesn't mean he can start depreciating each new wrinkle on his face, now that he's no longer People magazine's "Sexiest Man Alive."

But Clooney might be able to write off the 30 pounds he was required to gain in order to play the haggard CIA agent, for his Oscar-winning role in "Syriana," if he needed professional help to get fat fast.

Likewise, if Clooney needs a special regime to diet down for "Ocean's 13," that's also a business expense.

"As a lawyer, I think it might help my career to join a gym, so that I look my best in front of clients. But performers are among the few of us who can get to deduct the cost of getting in shape — or even out of shape — if that's what a role calls for," says Los Angeles entertainment and tax attorney Bill Abrams.