Playboy founder Hugh Hefner and Playboy Playmate Crystal Harris are engaged.

The Playboy media mogul confirmed the news Christmas morning via Twitter. Since then both of them has been among the trending topics on twitter.

The 84-year-old Playboy founder posted from his page, “After the movie tonight, Crystal & I exchanged gifts. I gave Crystal a ring. A truly memorable Christmas Eve,” adding, “When I gave Crystal the ring, she burst into tears.

This is the happiest Christmas weekend in memory.” On Christmas, Hefner clarified, “Yes, the ring I gave Crystal is an engagement ring. I didn’t mean to make a mystery out of it. A very merry Christmas to all.”

Harris, 24, met Hefner in 2008 at the Playboy Mansion during one of the mag’s famous Halloween bashes. The model/singer, who was Playboy’s December 2009 Playmate and served as 2010’s Miss January, also took to her Twitter to talk about their news.

In response to well-wishes from the likes of former Playmate (and Hefner ex) Kendra Wilkinson, Harris noted, “Hef and I are Trending on @twitter:)”

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