Crystal Harris showed off her engagement ring to her Twitter followers on Monday, December 10.
The ring, which was given to her by fiance and Playboy founder Hugh Hefner, features a large diamond with several smaller diamonds surrounding it.
Harris Tweeted out a photo of the ring with the simple caption, "My beautiful ring from @hughhefner."
Hefner is quoted by People magazine as saying, "I've given Crystal Harris a ring. I love the girl."
Harris, 26, has changed her name on her Twitter profile to Crystal Hefner, however, her handle is still @CrystalHarris. Her Instagram username is currently "crystalhefner."
Hefner revealed on Twitter on Thursday, December 13, that Harris has been inducted into Disneyland's private club called Club 33.
"Crystal became a member of Club 33 at Disneyland today. A Christmas gift to my darling that we can share together," he Tweeted.
The exclusive club opened up its waitlist for the first time in a decade in May. The initiation fee for first time individual members is currently $25,000 and annual dues are $10,000. KABC-Television, OTRC.com's parent company, toured Club 33 earlier this year.
In September, Christian Bale took a 4-year-old boy battling cancer and his family to the exclusive club as part of a day at Disneyland.
Harris and Hefner, 86, announced their second engagement earlier this month and the couple obtained a marriage license.
The two were engaged in 2010 after being together for about two years. Harris called off their wedding in June 2011, just days before the ceremony.
After the two split last year, Playboy released its July 2011 issue, which featured Harris on the cover alongside the headline "Runaway Bride." (see photo)
Hefner and Harris reconciled earlier this spring and she moved back to his Playboy Mansion. The couple picked up a marriage license at a courthouse in nearby Beverly Hills on Tuesday, December 4, the Associated Press reported.
This will be the third marriage for Hefner. He and Playboy Playmate Kimberley Conrad were married between 1989 and March 2010. They have two adult sons - Marston and Cooper. Hefner divorced his first wife, Mildred Williams, in 1959 after 10 years of marriage. They have two children - Christie and David.