Born in October 1983, Holly Montag is the older sister of Heidi Pratt. She made her first appearance on The Hills in season four.
She replaced her sister and brother-in-law, Spencer Pratt, during the second season of the NBC reality series I'm a Celebrity Get Me Out of Here! While on the show, she developed a close relationship with former American Idol contestant Sanjaya Malakar. Montag denied reports that she was dating Malakar and insisted they were just close friends.