Hugh Hefner's marriage to Crystal Harris will "definitely" be his last.

The 84-year-old Playboy mogul thinks the 24-year-old beauty "deserves" to still be his spouse when he eventually passes away.

He said: "She, you know, she deserves it. She deserves to be my widow."

The magazine mogul regards second wife Kimberley Conrad - who he married in 1989, separated from in 1998 and finally divorced in 2010 - as the "love of his life", despite admitting he never got to know her very well but insists he has no regrets about their union because it gave him sons Marston, 20, and 19-yearold Cooper.

He told the Sunday Times magazine: "I don't think I ever knew the girl, you know? But I don't regret it in that I got two wonderful children."

However, Hugh - who also has two other children, Christie, 48, and David, 45, from his marriage to first wife Mildred Williams - believes his union with Crystal, whom he met in 2008, won't end in tears.

He said: "I think she loves me."

Hugh and Crystal got engaged last Christmas Eve (24.12.10) and the aspiring singer has previously revealed the couple are hoping for a summer wedding with "close friends and family" at the Playboy Mansion.

She said recently: "Both my parents are super supportive of everything and whatever makes Hef and I happy makes them happy. I couldn't be happier."