This will be the mother-of-four's fourth marriage. She was previously married to music producer John Reynold, journalist Nicholas Sommerlad and musician Steve Cooney - all of whom O'Connor has described as "very nice people".
"I think they were all just glad to see the back of me," she was quoted as saying last month.
Although unconfirmed, a report in the Irish Independent claims the singer will be walking down the aisle in Las Vegas.
The nuptial announcement follows just four months after O'Connor took her quest for love online. She raised eyebrows with a series of blog posts, declaring she was on the hunt for a "very sweet sex-starved man" who was "extremely sweet, kind, very respectful, considerate but absolutely FILTHY minded."
She added: "My sh*t-uation sexually/affectionately speaking is so dire that inanimate objects are starting to look good as are inappropriate and/or unavailable men and/or inappropriate and/or unavailable fruits and vegetables. I tell you yams are looking like the winners."
And she had some very specific requirements, too:
* He must be no younger than 44.
* Must be living in Ireland but I don't care if he is from the planet Zog.
* Must not be named Brian or Nigel.
* Must be blind enough to think I'm gorgeous.
* Has to be employed. Am not fussy in what capacity generally but vehicle clampers need not apply.
* I like me a hairy man so buffed and/or waxed need not apply.
* No hair gel.
* No hair dryer use.
* No hair dye.
She called off the search two months later.
"Happily I can announce the official end of hunt for boyfriend as successful applicant has been appointed. No more applications are required," she wrote in October. "I realise this will be a matter of enormous sorrow to 98% of the men of the world... But hey... Write a song about it... Silence will now ensue as there is much love-making to be done."
Nothing compares 2 u, Barry!
Congratulations to the couple!
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