Hugh Hefner has welcomed his former fiancee Crystal Harris back into the Playboy mansion, almost a year to the day after she called off their wedding.

The 25-year-old model broke the Playboy boss' heart last June when she walked out on him just four days before they were due to exchange vows.

Reports this week suggested the 86 year old had reconciled with Harris - and although he has stopped short of confirming the rumors, Hefner has revealed the blonde beauty is back in his home.

In a series of posts on his Twitter page, he writes, "Getting back together with Crystal Harris shouldn't be a big surprise, since I have a history of remaining close to former girlfriends. (Girlfriend) Shera is in Canada visiting her family, which is unrelated to Crystal being here. Shera & my other mansion girlfriends welcomed Crystal here at dinner on Tuesday night, before playing games together."