Playboy boss Hugh Hefner has reportedly exchanged vows, the third time for him, with his girlfriend Crystal Harris.

The 86-year-old publishing tycoon, who was originally set to walk down the aisle last year with his girlfriend, got married to 26-year-old Harris at the Playboy Mansion in Beverly Hills, California, the Herald Sun reported.

The model-turned-lingerie store owner kept her fans updated about her big day with posts on Twitter, one of which said that she was feeling very "happy," "lucky" and "blessed" to become Mrs Hugh Hefner.

The British glamour model, who got cold feet and called off her wedding to Hefner last year, also posted a picture of staffers setting up the altar, and wrote in the caption that the mansion was looking beautiful.