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    Celeb Rehab Star (and Ex-Eric Dane/Rebecca Gayheart Snuggle Pal) Pregnant and Divorcing

    Kari Ann Peniche Albert L. Ortega / Getty Images

    Given Kari Ann Peniche's previous antics, we're not exactly shocked at this turn of events.

    The husband of the former Celebrity Rehab subject, who two years ago infamously appeared nude in a home video with Eric Dane and wife Rebecca Gayheart, has filed divorce papers seeking to end their four-month marriage.

    But here's the bombshell part: Not only is Peniche pregnant, he claims the baby may not even be his.

    MORE: Kari Ann Peniche "Just Had a Lot of Fun" With Eric & Rebecca

    Justin Williams filed his petition on July 1 in Los Angeles Superior Court, citing irreconcilable differences. But according to court papers obtained by E! News, her estranged hubby states that there is an "unborn child" and that he will be "seeking determination of whether this is a child of the marriage."

    Williams also said he'll pursue a genetic test to help determine paternity.

    MORE: Read the full divorce petition

    When news of the sex tape that wasn't with the Danes made headlines, Peniche told E! News that she entered Celebrity Rehab to get treatment for her carnal cravings but noted that "sex addition doesn't mean I go around and have sex with everybody."

    The 27-year-old ex-beauty queen, who at one time was engaged to pop star Aaron Carter for a whole five days, denied getting hot and heavy with the couple, maintaining their relationship was purely platonic.

    Attempts to reach Peniche for comment were unsuccessful.

    —Reporting by Claudia Rosenbaum

    MORE: Kari Ann Peniche: Sex Addict, Yes; Madam, No