Rufus Wainwright and his long-term partner Jorn Weisbrodt are to tie the knot on August 23 in Montauk, the Hamptons.
The pair have reportedly already bought their own wedding present, a 25-foot Airstream travel trailer.
Instead of giving traditional gifts, the couple have asked guests to donate to the cost of the trailer, which can be up to $75,000 depending on how much it has been customised.
The 39-year-old musician and theatre producer Jorn, are also planning to jump into the ocean after the ceremony and are encouraging their guests to join them.
The duo, who are parents to one-year-old daughter Viva Katherine, are to be married by a minister at Rufus's house.
Rufus and Jorn announced their engagement in November 2010 and sent out save-the-date videos for their wedding in February.
The video features a clip, shot by Jorn, of Rufus writing out the details of the big day in the sand on the beach.
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