WWW- PARIS Hilton’s career as a pop star is fizzling as quickly as one of her blink-and-you’ll-miss-it relationships.

In its first week out of the gate, Hilton’s first CD is being widely seen as a certified flop. “Paris,” which features the single “Stars Are Blind,” sold a lackluster 75,000 copies in the United States – a pittance compared to Christina Aguilera’s first-week sales of 320,000, according to Soundscan.

And projected sales for next week are said to be a measly 30,000, which is a larger than normal second week drop.

“Paris” is languishing at the bottom of Billboard’s Hot 100 – so Hilton’s label rushed out her second single, “Turn It Up,” which isn’t doing very well either.

“The international outlook is not much better for her,” one industry source told Page Six. “The international people are not inclined to do a big push since she can’t back up the album with a tour. Obviously, she can’t sing live.”

The source added that Hilton was advised a year ago to train her voice, work with choreographers and learn an instrument to prepare for a limited tour, but “obviously she didn’t listen.”

Hilton’s rep, Elliot Mintz, said, “To me, [the album] sounds huge. For a newcomer, this is incredibly impressive.”

Meanwhile, Hilton’s reputation as a dirty girl put one of her former sex partners on edge after they’d been to bed together.

Elijah Blue Allman, the hunky son of Cher and Gregg Allman, boasted to Howard Stern the other day that he had a fling with Hilton before she was famous – but he got nervous right afterward that he might have picked up a sexually transmitted disease from her. Allman says he was so worried, he raced downstairs and grabbed a household cleaning product to pour over his private parts and “disinfect” them.

While Stern flipped over the tawdry tale, aired over his Sirius Satellite Radio raunchfest show, Hilton wasn’t thrilled with the disclosure. “She’s not happy about it,” said a source, despite the fact Allman tried to lessen the low blow by noting she was a “sweet girl” nonetheless.