Hugh Hefner Engaged To Marry Crystal Harris!

Hugh Hefner, the twice-divorced founder of pioneering men’s mag Playboy, is taking the marriage plunge once again.

Hefner, 84, announced his engagement to Playboy Playmate Dec. 2009 Crystal Harris — who is 24 mind you — in a Christmas Day posting on Twitter.

“When I gave Crystal the ring, she burst into tears. This is the happiest Christmas weekend in memory,” says Hefner, who popped the question to the glee of Harris on Friday.

The publisher was first married to Mildred William, who he divorced after a decade of marriage in 1959. In 1989, Hefner wed Playmate of the Year Kimberly Conrad, the mother of his two grown sons. The couple separated in the late 1990s, but didn’t divorce until earlier this year. Hef, who chronicles his adventures as one-fourth of a poly-relationship on E!’s Girls Next Door, famously refused to wed longtime girlfriend Holly Madison. At the time, Hugh confessed that he was no longer interested in marriage.

“It’s unlikely since I haven’t been very successful at it…” he told PEOPLE in 2009.