“Laguna Beach” may have given way to “The Hills,” but Kristin Cavallari hasn’t gone away. The reality diva is back on the market, according to Life&Style, having split with beau Nick Zano.

“They broke up,” a pal confided to the tabloid. Although they just moved in together over the summer, the friend adds, “She moved out of their house. They’re going in separate directions.”

“It wasn’t working out,” the source explains. “She was bored, and I think she realized she was better off keeping her options open.”

And what options might those be? Well, it seems Kristin may be making a bid to renew her 15 minutes of fame, the pal says: “She used to be the It girl, and now she sees all of these other girls who would normally be in her shadow stealing the spotlight. I think she wants back in on the scene. So get ready, Hollywood — here comes Kristin Cavallari again!”

Why did a chill just suddenly run down our spine?

Actress Kristin Cavallari is shown arriving to the opening of the Pink Taco restaurant in Los Angeles, Thursday, June 28, 2007.
( AP Photo/Chris Polk)