(CNN) Chris Pratt and Katherine Schwarzenegger have tied the knot.

Schwarzenegger, 29, and Pratt, 39, announced on Instagram that they wed Saturday.

"Yesterday was the best day of our lives! We became husband and wife in front of God, our families and those we love. It was intimate, moving and emotional," they wrote in their posts.

The couple wed in Montecito, California, a source close to Pratt told CNN.

Giorgio Armani designed both Schwarzenegger's gown and Pratt's suit, the couple wrote.

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