Hugh Hefner Crystal Harris Wedding June 18

Start checking the mail: You may just be invited to a wedding at the Playboy Mansion. Hugh Hefner has set a date for his forthcoming nups to his 24-year-old fiancee Crystal Harris.

The Playboy founder announced his engagement to the blonde on Christmas Eve and has set a date for his nuptials, which will take place at the world-famous Playboy Mansion.

“The date of the wedding. Can I tell him? It is June 18th. This year, Saturday. We’re excited,” Crystal said speaking to CNN’s Piers Morgan this week.

“A June bride. It will be at the Mansion but it will be a little more intimate,” Hugh chimed in.

“It’s going to be fun. I mean he got married once in the front yard so I asked if we could do it in the backyard,” Crystal explained.

The soon-to-be newlyweds have also revealed who will be part of their wedding party.

“My brother will be my best man. The groomsmen will be my two youngest sons, Marston and Cooper,” says Hugh – who also has two children Christie, 48, and David, 45, from his marriage to first wife Mildred Williams.

Crystal added: “The bridesmaids are my best friend, Ana, as my maid of honor, and my two sisters are going to be my bridesmaids.”

The Playboy Mansion in upscale Beverly Hills has hosted a few nups over the years. Hugh wed second wife Kimberly Conrad at the sprawling estate in 1989. Former Playmate Kendra Wilkinson and NFL star Hank Baskett also tied the knot there in June 2009.