The blonde spent New Year's Eve tweeting her excitement about the impending nuptials, including an image of a flower covered bower in front of just two dozen chairs.
Hugfh shared a picture of him and his bride, tweeting: 'Crystal & I married on New Year's Eve in the Mansion with Keith as my Best Man. Love that girl!'
The model, 26, had earlier written: 'Today is the day I become Mrs. Hugh Hefner. Feeling very happy, lucky, and blessed.'
She has changed her name on the social networking site to Crystal Hefner.
The blonde was dubbed a 'runaway bride' by the 86-year-old mogul after she called off their engagement just days before their wedding in June 2011.
After their split, she revealed she had only been intimate with him once - and very briefly.
She admitted sex with the octogenarian lasted 'like two seconds', adding: 'Then I was just over it. I was like, 'Ahhh.' I was over it.
'I just like, walked away. I'm not turned on by Hef, sorry.'
She continued: 'He doesn't really take off his clothes. I've never seen Hef naked.'
Despite her comments, the pair reconciled in May this year and will marry in a lavish Los Angeles ceremony.
Hugh recently said he wants to stay with Crystal until he dies and insisted he doesn't care about the 60-year age difference between them.
He tweeted: 'The dramatic age difference between difference & Crystal & me really doesn't matter. Whatever time I have left, we want to spend together.'
Hugh has been married twice previously, to Mildred Williams from 1949 to 1959 and Kimberley Conrad from 1989 to 2010.