Heidi Blair Pratt (née Montag; born September 15, 1986) is an American media personality and singer. She came to prominence with her starring role on the MTV reality series The Hills from 2006 to 2010. The majority of the episodes followed the life of her former friend and housemate Lauren Conrad.
The series' second season saw Montag date fellow cast member Spencer Pratt. In November 2008, the couple eloped to Mexico, though later married in the United States in April 2009. In July 2010, Montag filed for divorce after fifteen months of marriage to Pratt, but later called off the divorce.
Montag began working on her first studio album, Superficial, in 2007. It was released in January 2010. In 2011, she was featured on the VH1 reality TV series Famous Food.