Los Angeles: Singer Mariah Carey will tie the knot with her fiance and businessman James Packer on the exclusive island of Barbuda in the Caribbean. The "We belong together" hitmaker's wedding ceremony will be a private affair with only 50 guests attending, according to TMZ, reports aceshowbiz.com. Sources close to the couple have said that Carey is planning to exchange vows with Packer this summer on the island, where her fiance is currently building a private $250 million resort with actor Robert De Niro. While there is no word on the exact date, it is likely to be sometime after mid-June. The singer is only inviting a small group of friends, who will be flown in on private jets. However, the invitations are yet to be delivered.