Mariah Carey welcomed twins on Saturday with husband Nick Cannon.
Cindi Berger, a representative for the couple, confirmed to the Associated Press that Carey gave birth on Saturday at 12.07pm EDT at an unknown hospital in Los Angeles.
Saturday marked the couple's fourth wedding anniversary.
The singer's daughter was born first, weighing 5lb 3oz, followed closely by a boy, weighing 5lb 6oz.
"My wife just gave me the most incredible anniversary gift ever in life!" Cannon tweeted. "I won't ever be able to top this!"
Comedian Cannon sat down for an interview with Ellen DeGeneres earlier this week, in which he revealed Carey was likely to give birth "at any minute".
The statement also revealed that the pair listened to Carey's 2005 single 'We Belong Together' shortly after the births.
