In May 2009, Cavallari confirmed she would be joining the cast of Laguna Beach's spin-off series, The Hills.

Here she is rocking her typical grungy but glamorous look, teaming a black mini skirt with a tied up T-shirt, mirrored sunglasses and a pair of Vans trainers.

The old school skate brand is her go-to for dressed down days, and she's got a collection including hi tops and red trainers.

In 2008, she had a supporting role as Summer in Spring Breakdown alongside Amy Poehler.

The film was released straight-to-DVD on June 2, 2009, and received mixed reviews.

She also starred in the straight-to-DVD film, National Lampoon's Van Wilder: Freshman Year, as Kaitlyn.

The film was released July 14, 2009, to mixed to negative reviews.

She also starred in the independent film Green Flash alongside Torrey De Vitto.

In 2009, she starred in the independent American high school comedy film, Wild Cherry, as Trish, which also starred Rumer Willis.

The second half of the season premiered on September 29, 2009, with Cavallari assuming the position of former main cast member and narrator Conrad.

Despite originally signing a deal with MTV to appear in two additional seasons following the fifth, the sixth and final season concluded on July 13, 2010.

Cavallari's romance with Colletti caused a rivalry with another cast member, Lauren Conrad.