Hugh Hefner's Playmate fiancee calls off wedding

Image caption, Meanwhile, Crystal Harris's debut single Club Queen was released on iTunes on Tuesday

The wedding of Playboy founder Hugh Hefner to his 25-year-old girlfriend has been called off, following her change of heart, Mr Hefner announced.

Mr Hefner was to marry Crystal Harris, who was featured in the magazine as Playmate of the Month in December 2009, on Saturday.

The 85-year-old has been married twice before, in 1949 and 1989.

, Ms Harris wrote that she had taken the decision "after much deep reflection and thought".

Privacy plea

"I have decided to end my engagement with Hef," she wrote.

Video caption, Watch an interview with the couple filmed in London in May 2011

"I have the utmost respect for Hef and wish him the best going forward. I hope the media will give each of us the privacy we deserve during this time."

On his Twitter feed, Mr Hefner wrote: "The wedding is off. Crystal has had a change of heart."

The pair were to be wed this Saturday, 18 June, with a video of the ceremony to be broadcast next month.