Kendra Wilkinson is trying to halt the release of a sex tape starring her, RadarOnline.com reported Wednesday.

The 24-year-old reality TV star's lawyer Yael E. Holtkamp sent a letter to Vivid Entertainment demanding the adult video company "cease and desist" the release of the tape.

"The video is private and highly confidential taken for private use and not for public disclosure," the letter reads. "Any exploitation of the video would be a gross violation of Miss Wilkinson's constitutional and common law rights of privacy."

Sources told the website that Wilkinson, a former Playboy model, knew about the video but that she made it with a man she trusted and didn't think that it would be released to the public.

According to the report, she is unsure who sold the steamy footage to Vivid, the same company that released a sex tape starring Kim Kardashian.

Wilkinson starred on the reality show "The Girls Next Door" when she was a Playboy model and one of the girlfriends of founder Hugh Hefner. She's now married to Philadelphia Eagles wide receiver Hank Baskett. The two have a baby boy, Hank Baskett IV, born in December 2009.