Elizabeth Luebke was found by a passerby just a few blocks from the house she had attended a party at the night before, the Milwaukee County medical examiner said in a report.
Luebke, who attended the party following a concert on Saturday night, had been reported missing by her mother.
Officials said that a video camera at a nearby business captured Luebke walking down the street when she suddenly collapsed in front of a home and eventually stopped moving.
It was a freezing night, with a low temperature of –27.5 degrees with the wind chill factored in at 4:25 a.m., when Luebke collapsed.
Officials said Luebke’s body was “mostly frozen” when it was found and that she was “not dressed for the elements.” She was found wearing shorts, fishnet stockings, shoes, and a tank top. A sweater was found near her body.