Arnold Schwarzenegger's daughter Katherine Schwarzenegger and Chris Pratt welcome their first child together. Photo: Getty Images for Disney.

Movie star Arnold Schwarzenegger is officially a grandfather as daughter Katherine Schwarzenegger and actor Chris Pratt have welcomed their first child together. Already the American actor, 41, has a seven-year-old son Jack with his ex-wife Anna Faris. Now the Passengers star has added to his brood with his new wife, 30 after they tied the knot last year. Katherine's brother Patrick confirmed the sweet news as he said they were "doing great". A telling pink ribbon was on the package Patrick flaunted at the camera but the gender of the baby has yet to be confirmed publicly.

He told Entertainment Tonight: "They're doing great - just got her a little gift."

READ ALSO: Schwarzenegger assaulted with flying kick in South Africa

It's said Chris' car was spied at St. John’s Hospital in Santa Monica, California on Friday. News the married couple were expecting a baby hit headlines in April - just 10 months after they got married. It's been a whirlwind romance for the lovebirds so far as it's panned out in the spotlight. They were engaged in January last year, married by the June and now they've welcomed their first child as a couple.

This is Chris' second marriage. Previously he was married to American actress Anna with whom he shares his son Jack. They were married in 2009 but their marriage collapsed in 2017. Their divorce was finalised the following year in 2018. Months later, Chris fell madly in love all over again but this time with his second wife Katherine. The American hunk has made it big as an actor in Hollywood. However, Chris reassured the world fatherhood was, in fact, the best job in the world.

Already the American actor, 41, has a seven-year-old son Jack with his ex-wife Anna Faris. Photo: Corbis via Getty Images.

READ ALSO: Arnold Schwarzenegger’s expo in Ohio stopped over coronavirus

He told Variety in 2014: "I've done all kinds of cool things as an actor - I've jumped out of helicopters and done some daring stunts and played baseball in a professional stadium. But none of it means anything compared to being somebody’s daddy."