Mary Louise Weller, born September 1, 1946, is an American actress.
[2] The onetime top New York model made her film debut with an uncredited role in the 1973 Al Pacino cop drama Serpico.
Her greatest renown is with her performance as prissy, uptight sorority sister Mandy Pepperidge in the 1978 hit comedy Animal House.
[3] After Animal House, Weller appeared in The Bell Jar (1979), Once Upon a Spy (1980), Forced Vengeance (1982), Blood Tide (1982) and Q (1982).
[4] According to Dancing at Ciro's, Mary Louise Weller is of Lithuanian-Jewish descent.