K CAV makin that money and guest starring on CANE this Tuesday on CBS at 10!

KRISTIN Cavallari, the "Laguna Beach" reality "star" - we use the word loosely - has come up with a new way to make some money. Like Paris Hilton, she's charging club owners for personal appearances that might produce publicity for their venues in celebrity-obsessed weekly magazines. She was clever enough to spark a bidding war between Tao Las Vegas and Pure Las Vegas for the rights to hold her 21st birthday event - and bids are already up to $100,000. Cavallari has also mastered a method originated by Jessica Simpson and her father, Joe. She has a friend who fronts as a "personal photographer" and gets the "big photos" of her making out with pal Nick Zano. She then sells the images to the tabs, who give her a percentage. The practice "infuriates event organizers who pay her to attend their events because they only get C-rate photos for their use," a spy said. Cavallari's rep said, "We have some nice offers from different venues to hold Kristin's birthday party, and she has not yet chosen one . . . In this time of stalkerazzi who invade her privacy, Kristin, like many other celebs, has found a way to try to counter and control these uncomfortable situations and work with photographers they know and trust."

Side note - Kristin will guest star on the CBS show Cane this Tuesday, October 16th at 10!