Hugh Hefner 86th Birthday Bash: Magazine Mogul Poses as Humphrey Bogart

Hugh Hefner celebrated his 86th birthday on Saturday during an annual Casablanca Night party at his mansion.

While Hefner celebrated his 86th birthday as an un-married man, after Crystal Harris who he proposed to last year called off the engagement five days before the wedding, the business mogul appeared not to be alone.

Hefner's actual birthday was on Monday, but he spent Saturday night as the guest of honor at his own annual party.

"Casablanca Night is a very special night at the Playboy Mansion -- screening my favorite film on my birthday weekend," Hefner told Us Weekly.

The guest list for the event includes all models who have posed as centerfold's for Hefner's magazine, in addition to his many friends. Hefner is famous for his start up business "Playboy Magazine." The first issue of the magazine was published in 1953 and featured Marilyn Monroe.

Even though Hefner is not expected to die anytime soon, in honor of the woman he never met, Hefner purchased the crypt next to Monroe in preparation for when the time did come.

Saturday however, was all about celebration as Hefner explained his usual birthday routine.

"Casablanca Night is a tradition that began 20 years ago and it just keeps getting better as time goes by," Hefner told Us. "We dress for the occasion and after the film, my closest friends, my girls and I share champagne and caviar by candlelight in the dining room, that is converted into Rick's Café."

For a birthday surprise, Hefner was honored with a birthday cake, which revealed the magazine maker super imposed on the body of Humphrey Bogart from a 1942 movie poster.