Kendra Wilkinson is set to become the unwilling star of a new sex tape.

Porn distributors Vivid have obtained the X-rated footage of the former Playboy model and intend to release it by the end of the month.

The DVD will be called 'Kendra Exposed' and all the scenes were shot several years ago before she became famous.

Kendra - who has a four-month-old son, Hank Baskett IV, with her American footballer husband Hank Baskett - is not giving her backing to the tape's release and has reportedly instructed Los Angeles law firm Lavely & Singer to stop the proposed DVD from coming out.

However, Vivid CEO and founder Steve Hirsch is convinced his company has the legal right to bring it out.

He said: "After reviewing our legal position we remain confident of our right to distribute the video. Thus Vivid.Com plans to release 'Kendra Exposed' within the next several weeks."

Vivid has tried to contact Kendra - who was once a live-in girlfriend of Playboy founder Hugh Hefner - about the tape and the company has high hopes it will be a huge success.

Hirsch added: "We believe this could be our all time best-selling celebrity tape."

The legal battle and subsequent fallout will be filmed for the 24-year-old blonde beauty's E! reality TV show 'Kendra'.