An 18-year-old high school student was among three people killed in a horror multi-vehicle crash in Missouri — just days after she was voted prom queen.

Jordyn “Lunar” William, a senior at Ritenour High School, was a passenger in her 53-year-old aunt Cherese Fisher’s Lexus when they were sideswiped by another car in Bellefontaine Neighbors
on Friday night.

The collision caused the Lexus to careen into oncoming traffic and crash into a Toyota Highlander, causing it to overturn, cops said.

The teen, her aunt and the driver of the Toyota, 26-year-old Andrea Medina, all died.

The Cadillac, meanwhile, veered off the road and crashed into some nearby trees.

Authorities are still trying to track down the driver of the Cadillac.

No details about the missing driver’s age, identity or condition have been released.

The tragedy unfolded soon after the teen won prom queen, First Alert 4 reported.

“It is with a heavy heart that I have to share the news of the passing of one of our students,” Ritenour High School’s assistant superintendent said.

“This is a difficult time for our entire community.”