Hugh Hefner on the Rebound With a New Playmate

(Playboy)

Hugh Hefner is now dating an older woman.

Older than his ex-fiancee Crystal Harris, that is.

By 24 days.

Hef's new main squeeze is Playboy's Miss January 2011 Anna Sophia Berglund, TMZ reports. Sources tell the site that Berglund, 25, has moved into Hefner's room at his Playboy mansion and that during a recent movie night the two were cuddling and kissing.

"It's clear Hef has moved on to Anna," the source said.

Indeed.

Harris called off her

"The wedding is off. Crystal has had a change of heart," Hefner tweeted.

Hefner, 85, and the former Playmate were set to walk down the aisle this past weekend, but the two canceled the plans following a heated disagreement.

"There are two mistakes one can make along the road to truth ... not going all the way, and not starting," Harris tweeted to her fans last Tuesday, the same day she launched her music career with the release of her single "Club Queen."

The previous week Hefner tweeted a photo of their wedding invitation.

The surprise news also came out the same day comedy site Funnyordie.com launched a spoof video where Harris talks about a

Maybe Anna Sophia should take a look?

Hefner had proposed to the buxom blonde on Christmas Eve with a sizable diamond sparkler.

The proposal came only months after Hefner finalized his divorce from second

His first marriage, to Mildred Williams, ended in 1959, six years after he founded Playboy magazine. Hefner also has two children with Williams.