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Sinead O'Connor has teased fans with a glimpse of her wedding day, telling them the ceremony was "too glorious for words."

The "Nothing Compares 2 U" hitmaker wed therapist Barry Herridge in the back of a pink Cadillac at A Little White Wedding Chapel on the Las Vegas strip on Thursday, her 45th birthday.

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O'Connor logged online after the ceremony to confirm the marriage to her followers, promising to give them a full rundown of her big day on Sunday.

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She also used the post to poke fun at the trend for stars to invite famous friends to their nuptials, by uploading a picture of empty chairs alongside the caption: "photo of the celebrity guests at our wedding."

In the post, O'Connor wrote, "Dear friends ... amongst whom I include whomever may be reading this with a view to writing about the glorious marriage. Am blogging this cus media people are naturally seeking me.

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"On sunday I will put up (a) blog on whole day. Too glorious for words."