Crystal Harris Shows Off Hugh Hefner's Diamond Engagement Ring

Hugh Hefner has put a ring on it a second time for fiancé Crystal Harris.

Hef's runaway bride took to Twitter to flaunt her shiny new rock (see above), writing, "My beautiful ring from @hughhefner." The couple is just weeks away from their New Year's Eve wedding at the Playboy Mansion, E! News reports.

While the twosome were supposed to exchange vows in June 2011, the blonde bombshell needed some space to figure out what she wanted in her young 26-year-old life. Instead of keeping the ring from the last go-round at marriage with the adult mag mogul, she sold her 3.39-carat bling for half its value at Christie's Auction House in October 2011.

Hopefully, this time around, the ring stays on her finger.