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Nikki Reed, Paul McDonald

Charley Gallay/WireImage.com

Nikki Reed and Paul McDonald have made it official!

The pair got married in a private Malibu ceremony on Sunday, a source confirms to E! News.

The former American Idol contestant and Twilight star exchanged vows in front of close friends and family, as well as Idol alum Stefano Langone and members of McDonald's band, the Grand Magnolias.

Spy Kids star and good friend Alexa Vega served as Nikki's maid of honor and the groom and his band serenaded the crowd with surprise performances.

"We couldn't be happier!" Nikki tells Us Weekly. "[We were] surrounded by our family and friends. We're so glad this day has come."