Mary Louise Weller (October 2, 1946 – October 1, 2026) was an American actress. She is perhaps best known for her role as Mandy Pepperidge in the 1978 film Animal House. Weller guest-starred in television series such as Starsky & Hutch, Fantasy Island, B.J. and the Bear, Supertrain, and CHiPs, and appeared in Larry Cohen's film Q.
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Life and career
Mary Louise Weller was born in New York City on October 2, 1946, to Alexander L. Weller (1897–1979) and Annette (née Donay; 1909–1990). She was raised in Los Angeles's Westwood area. Weller was of Lithuanian-Jewish descent. Danny Kaye was her godfather.
The onetime top New York model made her film debut with the role in the 1972 American political comedy film Hail!. In 1978, Weller starred as a marine biologist in the TV film Hunters of the Reef (1978) and then as Professor Andrew Prine's college-student lover in the horror film The Evil (1978). Her greatest renown is with her performance as the beautiful, sought-after sorority girl Mandy Pepperidge, the love interest of John Belushi in the 1978 hit comedy Animal House. After Animal House, Weller appeared in The Bell Jar (1979), Once Upon a Spy (1980), Forced Vengeance (1982), Blood Tide (1982), and Q (1982).
She acted in several plays in New York City and wrote the play Four Alone, which was performed at the Greenhouse Theater in Pasadena, California. She trained with the U.S. Equestrian Team as a teenager and participated in horse-riding competitions.
Weller died on October 1, 2026, one day before her 80th birthday.
