Chris Pratt says his wife Katherine Schwarzenegger will make "a great mum one day".

Katherine Schwarzenegger and Chris Pratt

Katherine Schwarzenegger and Chris Pratt

The 40-year-old actor married Katherine in 2019, and has said she's already such a hands-on step mother to Chris' seven-year-old son Jack - whom he has with his ex-wife Anna Faris - that he knows she'll one day be a fantastic parent to their own children.

He said: "She has changed my life for the better in so many ways. My heart, my soul, my son I feel are all so safe with her. She's a great step mum.

"She's, God willing, going to be a great mum one day. She's got great parents, great siblings, she fills in all my many deficits."

The 'Jurassic World: Dominion' star says he suffers from being a "scatterbrain", but can always rely on the 30-year-old author - who is the daughter of Arnold Schwarzenegger and Maria Shriver - to help him out.

He added during an appearance on E! show 'In The Room': "My nickname on these press tours is Yard Sale because I'm such a scatterbrain. And she doesn't mind helping me with that stuff. It's a good match."

Chris' comments about future family plans for himself and Katherine come after Katherine's father Arnold recently said he is "looking forward" to becoming a grandfather, but isn't "pushing" the pair to have kids.

Arnold explained: "I don't push it because I know it's going to happen eventually. It's up to Chris and her when they want to do that but I'm looking forward it to, yes."

Meanwhile, Katherine previously admitted she feels so "thankful" to be married to Chris.

She wrote: "Today, I am grateful for this bike ride with my wonderful husband and seeing the colours of the fall leaves. While we were riding our bikes, he said let's give out real honest compliments to people we pass and see what happens.

"We did, and not only did random compliments surprise people on the bike path, they also made us feel good. This also reminded me how thankful I am to be married to someone who thinks of kind ways to make the world a better place. Happy Saturday (sic)"