Mariah Carey and Nick Cannon Mariah Carey and Nick Cannon

Mariah Carey and Nick Cannon renewed their wedding vows Friday in Paris days before their four-year wedding anniversary.

"Tonight was an incredible night," Carey tweeted. "I can't express how amazing it was to renew our vows in Paris at the top of the Eiffel tower."

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Carey, 42, wore a white mermaid gown with a black bow for the ceremony, while Cannon, 31, sported an all-white suit with a black tie.

Monday is not only their four-year anniversary, but the first birthday for the couple's twins Roc and Roe.

The celebration follows a rough start to the year for Cannon, who was hospitalized for a kidney infection and has since been diagnosed with a lupus-like autoimmune disease. Cannon will return as the host of America's Got Talent when the new season premieres on Monday, May 14.