Laguna Beach Star Kristin Cavallari Single Again  8/9/06

US reality TV star Kristin Cavallari has split from her boyfriend Brody Jenner for the second time.

The aspiring actress, 19, leaped to fame in 2004 in MTV series Laguna Beach: The Real Orange County and recently hosted reality show Get This Party Started.

Cavalarri and Brody, 22, originally split up last autumn (05), but soon reconciled.

Cavallari, 19, says, "Yes, Brody and I broke up. It's just hard right now because I am working all the time. We're still good friends though."

Earlier this year (06), Nick Lachey was forced to deny reports he was dating the teenager, insisting they were just friends.