London: Playboy boss Hugh Hefner presented his fiancée with a huge diamond ring on Christmas day, which she has taken to Twitter to proudly show off.
"For those of you who have been asking to see my ring here it is... My engagement ring from my love hughhefner," the Daily Mail quoted Crystal Harris as writing on Twitter.
The 24-year-old also tweeted a picture showing just how she charmed Hefner, her blonde hair thrown back as she struck a sultry pose.
Harris met the 84-year-old on Halloween in 2008 and started dating him in January 2009 while he was also dating identical twin glamour models Kristina and Karissa Shannon.
But he ended his relationship with the twins in January this year and has remained monogamous to Crystal since.
Previously he tweeted, "She burst into tears. This is the happiest Christmas in memory."
And, she tweeted in agreement saying, "The most memorable Christmas ever. I love him."