He's already involved in multiple lawsuits regarding his illegal use of celebrity photos from reputable agencies such as x17.

Now, on top of those legal problems, it appears Perez Hilton may have used the virtual five-finger discount (so to speak) when it came to creating his site's own logo.

TMZ has obtained a copy of a letter sent to the quote-unquote celebrity gossip gangsta from Creative Age Publications, demanding their logo be removed from his site.

We're not surprised in the least that such allegations have been levied against Hilton, seen here with pal Lindsay Lohan.

Creative Age alleges that the picture Perez (a.k.a. Mario Lavandeira) uses as his logo is theirs. It appears in a feature in the September 2004 issue of Nailpro, a magazine geared toward salon owners and managers.

Deborah Carver, publisher of Nailpro, says, "I'm a [Perez Hilton] fan, but he can't use our award-winning photos. This isn't the first time he's done this. These are proprietary works that take an entire team of people to put together."

The letter, which is dated today, tells the blogger, who is biased towards pseudo-namesake Paris Hilton and many other stars he covers:

"Please be advised that our client is entitled to seek statuatory damages for willful copyright infringement up to $150,000 per work infringed."

Lavandeira's lawyer says he has not received any such letter. Expect Perez to fight back with something really creative - like a picture of a fingernail with white dots on it.