Heidi Blair Pratt ( born September 15, 1986) is an American
television personality, singer, fashion designer, and author.
Born and raised in Crested Butte, Colorado, she befriended
Lauren Conrad in 2005. In 2006, Montag came to prominence after
being cast in the reality television series The Hills, which
chronicled the personal and professional lives of Conrad, Montag,
and friends Audrina Patridge and Whitney Port. During its
production, she briefly attended the Fashion Institute of Design
& Merchandising and was employed by event planning company
Bolthouse Productions. As the series progressed, Montag began
dating fellow cast member Spencer Pratt, which ultimately ended
her friendship with Conrad.