Kendra Wilkinson is apparently unhappy that a porn company plans to release a sex tape starring her by the end of the month.

The Kendra and former The Girls Next Door star has hired a law firm to try and prevent Vivid Entertainment from releasing the tape, which the porn company has dubbed Kendra Exposed, RadarOnline reported Wednesday.

"We know that Kendra has millions of fans and we feel that it's rare to find well-produced, hardcore footage of a star of her magnitude. The tape was brought to us by a third party and after consulting with our attorneys, we are confident in our right to distribute it," said Vivid co-founder Steven Hirsch in announcing the sex tape's upcoming release.

"We've been trying to reach Kendra but have so far been unsuccessful. We therefore made the decision to release Kendra Exposed to stores across the country by the end of May. We believe this could be our all time best selling celebrity tape."

While Vivid did not reveal the name of Wilkinson's sexual partner in the video, RadarOnline reported there is speculation that it is an ex-boyfriend who was also responsible for selling the footage to Vivid.

The tape was apparently made before Wilkinson moved into the Playboy Mansion as one of Hugh Hefner's girlfriends in 2005.

Wilkinson wed NFL star Hank Baskett last June and the couple welcomed their first child -- Hank Baskett IV -- in December. Kendra's second season premiered on E! in March.