Kristin Cavallari

Born in Denver, Colorado, Kristin Cavallari moved to California with her brother and father as a high school junior when the first season of "Laguna Beach: The Real Orange County" began production for MTV.

She was nominated for a Teen Choice Award in 2006 for Choice Reality Star. After completing two successful years on the hit show, Cavallari switched gears to focus on a career in acting. From 2006-2009 she starred in such films as "Van Wilder: Freshman Year," "Green Flash," "Spring Breakdown" and "Wild Cherry," alongside Rumer Willis and Rob Schneider. Next she played a guest role on "CSI: NY," and most recently on ABC's "The Middle." Other credits include "Veronica Mars," the lead role in Teddy Geiger's "For You I Will (Confidence)" music video and Gavin Degraw's video for his single, "In Love with a Girl."

In May 2009, Cavallari confirmed that she would be joining the cast of MTV's reality series "The Hills." Currently serving as ambassador of children's charity One Kid One World, Cavallari joins the fight to aid underprivileged children around the globe. In 2010 she traveled to El Salvador, where she spent time rebuilding schools in local communities. Continuing her humanitarian efforts, she made her way to Kenya in early 2011 for another project for One Kid One World.

Most recently Cavallari combined her passion for fashion and love for charity by teaming up with Shoe Dazzle to design a spring shoe, with proceeds benefiting the charity. Her new spring shoe, named Bardot, will be available in summer of 2011. KRISTEN CAVALLARI, TV star, teams with two-time champ MARK BALLAS, who returns for his 9th season.