Playboy mogul Hugh Hefner has paid tribute to his longtime assistant following her death.
The adult magazine tycoon took to his Twitter page on Sunday to share the sad news about Mary O'Connor, who was his secretary for more than 40 years, and appeared on his reality show "The Girls Next Door." He tweeted, "Mary passed away today. We loved her more than words can say."
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Former "Girls Next Door" stars Holly Madison, Kendra Wilkinson and Bridget Marquardt also took to Twitter to send their condolences, along with Hefner's new wife, Crystal Harris.
The 86-year-old Playboy boss previously credited O'Connor with helping him reconcile with Harris after his bride-to-be called off their 2011 wedding just days before the ceremony. Hefner previously explained, "It's Mary O'Connor that brought Crystal Harris back. Crystal was miserable and said so. Mary told Crystal to write and tell me, which she did." The reunited couple exchanged vows at the Playboy Mansion in Beverly Hills, Calif., on New Year's Eve.