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from www.radaronline.com – Veteran porn actor Julian St. Jox [pictured right] says he had a three-way sex romp with a then 20-year-old Kim Kardashian at a Los Angeles swingers’ party in September of 2001, in this exclusive story from the new issue of Star magazine.

The ménage à trois took place at the Wyndham hotel in Culver City, St. Jox exclusively tells Star.

“It was around 11:30 p.m. when Kim showed up with a black male,” the porn actor tells Star. (Kim, now 31, was married to music producer Damon Thomas at the time, though it is not clear if he was her date to the sexy shindig.)

St. Jox exclusively tells Star he was accompanied to the revelrous get-together by another porn star named Emily Ann.

“As soon as Kim walked in, everyone was looking,” he said. “She wasn’t known at the time at all, not like today, but for everyone who frequented these parties, she was interesting because she was a new face.”

St. Jox exclusively tells Star his date to the party took a liking to Kim and propositioned her, which led to some dirty dancing.

“She was wearing a tight miniskirt and tank top and designer shoes and bag,” he remembered. “From afar she looked gorgeous. She had a great body and seemed bright … [she] something special about her: a je ne sais quoi.”

St. Jox exclusively tells Star the gorgeous reality star and her date eventually found the two porn stars in a private room, leading to Emily Ann and Kim having sex.

Soon, St. Jox had sex with the future reality star, who he said “looked like she was enjoying herself very much.

“She knew what she was doing. She was very responsive to me”, St. Jox recalled.

A second source confirmed the tryst to Star, though a Kardashian rep denied Kim’s participation in the orgy.

Star magazine hits newsstands Thursday.