Playboy founder Hugh Hefner and Crystal Harris became engaged on Christmas. confirmed that Hef Tweeted the happy news after giving his stunning GF an equally stunning ring.

"When I gave Crystal , she burst into tears. This is the happiest Christmas weekend in memory," the 84-year-old father of four Tweeted.

"Yes, the ring I gave Crystal is an engagement ring. A very merry Christmas to all."

The Girls Next Door
star Crystal, 24, was Playboy’s Miss January.

This is Hef’s third trip down the aisle.

Hef was previously married to Mildred Williams and Playmate Kimberly Conrad.

Mazel tov, you crazy kids!