According to E! Online, the two were married in front of friends and family in Montecito, California.
Celebrities at the wedding included Rob Lowe and "Guardians of the Galaxy" director James Gunn.
Katherine Schwarzenegger is the elder daughter of actor Arnold Schwarzenegger and Maria Shriver. She authored the children’s book “Maverick and Me” in 2017 and the positive self-image book “Rock What You’ve Got: Secrets to Loving Your Inner and Outer Beauty from Someone Who’s Been There and Back” in 2010.
Pratt got divorced in 2018 from actress Anna Faris after nearly nine years of marriage. They share a son, Jack, who was born in August 2012.
The Associated Press contributed to this report.
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