"On sunday I will put up blog on whole day. Too glorious for words," the singer wrote about the nuptials on her blog.
According to the magazine, O'Connor wore a low-cut pink dress and Herridge, a children's addiction counselor, donned a dark jacket with a pink shirt. After the 10-minute ceremony, the employees of the Little White Wedding Chapel sang "Happy Birthday" to the bride, who turned 45.
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This is the singer's fourth marriage. She has four children.