Mary Louise Weller was born September 1, 1946, and raised in Los Angeles. The onetime top New York model made her film debut with a small uncredited role in
Serpico (1973).
Weller was especially memorable as a beautiful marine biologist in the made-for-TV picture
Hunters of the Reef (1978) and, likewise, solid as professor
Andrew Prine's college student lover in the superior haunted house horror winner
The Evil (1978). But she achieved almost cultural-icon status with her excellent performance as sorority girl Mandy Pepperidge in the uproarious hit comedy
National Lampoon's Animal House (1978). After "Animal House", Weller went on to play many notable roles in both comedy and drama.