Diana Ross has sparked fears for herself after she abruptly canceled a scheduled cruise ship appearance due to "unforeseen circumstances," RadarOnline.com can reveal.

Ross, 81, was tapped to serve as the "godmother" at the naming ceremony for Royal Caribbean's Icon Class ship in June.

Last minute, a representative for the I'm Coming Out singer announced she would no longer be able to participate in the Star of the Seas showcase later this month. Article continues below advertisement

Ross Backs Out Of Cruise Appearance

The singer was supposed to kick off the Star of the Seas showcase in Port Canaveral, Florida, on August 20. The three-day cruise would then bring guests to the cruise line's private Perfect Day at CocoCay waterpark in the Bahamas.

One week before the ship se

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