Liftin is most notable for her ghost-writing and co-writing of celebrity memoirs and novels, including Tori Spelling's memoirs Stori Telling, Mommywood and Uncharted Territori and her children's book, Presenting... Tallulah.
She has also worked on Miley Cyrus' memoir Miles To Go, and Teri Hatcher's Burnt Toast: And Other Philosophies Of Life.
[2] Her first work, published on April 27, 1999 by Vintage Books, was co-written with her close friend and former college-roommate Kate Montgomery.
Titled Dear Exile: The True Story of Two Friends Separated (for a Year) by an Ocean, the book is a collection of letters they wrote to one another over a year-long period, while Montgomery was on assignment in rural Kenya with the Peace Corps, and Hilary, in Manhattan, New York, first pursuing her career.
[4] Liftin's most recent work, Movie Star by Lizzie Pepper[5] (2015, Viking), is the story of a young television actress who gets seduced by a Hollywood megastar and sucked into his religious cult.