Diana Ross is not sailing the high seas as planned.

The singer, 81, suddenly canceled her appearance on Royal Caribbean’s “Star of the Seas” showcase cruise that is taking place later this month.

“Due to unforeseen circumstances, Diana Ross will be unable to appear,” a rep for Ross told People on Tuesday. 7

“We are disappointed that Diana Ross is unable to join us to be godmother of ‘Star of the Seas,'” a representative for Royal Caribbean told The Post. “We look forward to announcing our new godmother soon.”

The Post has reached out to Ross’ rep for comment. 7

Ross was named the “godmother” of the cruise line’s second Icon Class ship in June.

The “I’m Coming Out” singer was set to sail on the showcase cruise out of Port Canaveral, Florida on Aug. 20. The voyage is expect

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