Crystal was Miss December 2009 and has been dating Hef since Holly, Bridget, and Kendra moved out of the Mansion.
Crystal, 24, is 60 years his junior. Hef Tweeted about the proposal in which the two exchanged gifts on Christmas Eve.
“Yes, the ring I gave Crystal is an engagement ring."
“When I gave Crystal the ring, she burst into tears." and "This is the happiest Christmas weekend in memory."
This will be the third marriage for Hef who made his divorce final from former Playmate Kimberley Conrad this year. The two had separated in 1998.
We wish the newly engaged couple well!