Hugh Hefner and fiancée Crystal Harris, 24, have given fans a preview of their wedding invite on Twitter ahead of the ceremony in June.
The card reads: "Crystal Harris and Hugh M Hefner request the pleasure of your company at the celebration of their marriage."
Guests have been asked to wear "semi formal attire" to the union and reception which will be held at the Playboy Mansion.
Model Crystal - who will be the 85-year-old mogul's third wife - said last month: "This will be the most romantic wedding ever."
A Playboy spokeswoman added: "No expense is being spared for the wedding.
"It isn't even a compromise, because Hef wants Crystal to have the wedding of her dreams."
Photo: © Twitter