Hugh Hefner, Crystal Harris
Hugh Hefner and his fiancee, Playboy Playmate Crystal Harris, arrive at the opening night gala of the 2011 TCM Classic Film Festival featuring a screening of a restoration of 'An American In Paris' in Hollywood, California April 28, 2011.Reuters

Playboy founder Hugh Hefner married his 26-year-old girlfriend Crystal Harris on Monday, New Year's Eve, at the Playboy Mansion in the presence of the families and friends of the couple.

[PHOTOS OF PLAYBOY FOUNDER HUGH HEFNER WITH HIS GIRLFRIENDS]

The wedding happened not along after the announcement of the couple's second engagement. They were first engaged in 2011 but Crystal walked out just a few days before the proposed wedding.

"Today is the day I become Mrs. Hugh Hefner. Feeling very happy, lucky, and blessed," tweeted Crystal Harris, who has changed her name to Crystal Hefner. She also posted a photo of her wedding gown on Twitter.

The 26-year-old British model was the Playboy Playmate of the Month for December 2009, and appeared on the cover of the magazine's July issue in 2011. She reunited with the adult entertainment mogul after a brief separation.

Hefner had earlier married twice. He married Mildred Williams in 1949 and had two children with her. The couple split in 1959. His then married Playmate Kimberley Conrad in 1989 and had two sons before separating in 1998.

Since then, Hefner dated several women like famous twins Sandy and Mandy Bentley, Brande Roderick, Izabella St. James, Tina Marie Jordan, Holly Madison, Bridget Marquardt, Kendra Wilkinson, identical twins Kristina and Karissa Shannon, and his new wife Crystal Harris.

[PHOTOS OF PLAYBOY FOUNDER HUGH HEFNER WITH HIS GIRLFRIENDS