Mia Amber Davis died in a Los Angeles hospital a day after outpatient knee surgery, officials said. She was 36.

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The actress and plus-size model was best known for her work in the 2000 big-screen comedy "Road Trip."

E! News said she was pronounced dead at Kaiser Permanente West Los Angeles Medical Center Tuesday morning after collapsing at home.

KNBC-TV, Los Angeles, reported Davis had outpatient knee surgery Monday at Cedars-Sinai. Craig Harvey of the Los Angeles coroner's office said she complained of shortness of breath the next day and collapsed on the way to the bathroom, KNBC said.

The cause of death had not been determined. An autopsy was expected to be performed this week, Harvey said.

David Baron, former chief of staff at Santa Monica-UCLA Medical Center & Orthopaedic Hospital, told E! News Davis may have suffered a pulmonary embolism, a rare but known complication of the type of surgery she underwent.

Baron never treated and didn't know Davis, E! News noted.