Saturday was the couple's third anniversary - and also the day when Carey gave birth to a girl and a boy in Los Angeles. On Sunday, Sharpton blessed the babies, and also presided over a ceremony where the couple renewed their vows.
Cannon tweeted words of thanks to the civil rights activist and said: "Yep we just had a wedding in the hospital!"
Sharpton tweeted that Carey looked "great" and that the babies are beautiful.
No names for the newborns have been announced.
