The House Bunny is a 2008 American comedy film directed by Fred Wolf, written by the writing team of Karen McCullah Lutz and Kirsten Smith, and produced by Adam Sandler, Jack Giarraputo, Anna Faris, Allen Covert, and Heather Parry. The film stars Faris, Colin Hanks, and Emma Stone, and tells the story of a former Playboy bunny who signs up to be the "house mother" of an unpopular university sorority after finding out she must leave the Playboy Mansion.

Karen McCullah is an American screenwriter and novelist most known for co-writing comedies such as 10 Things I Hate About You, Legally Blonde, Ella Enchanted, The House Bunny, The Ugly Truth and She's the Man with her screenwriting partner Kirsten Smith. After graduating from James Madison University with a degree in marketing, McCullah worked various jobs before beginning to write. She is a faculty member at Syracuse University's Los Angeles Semester.