United Kingdom, June 5 -- Sharon Stone had a room in her house dedicated to "dad questions", where she switched parenting roles for her sons.

The 68-year-old actress has adopted trio Roan, 26, Laird, 21, and 20-year-old Quinn and her boys were so appreciative of her approach growing up, they even used to buy her cards for Father's Day, as well as Mother's Day.

Speaking to Keke Palmer for Variety's Actors on Actors series, the pair acknowledged being a single parent is "so hard", and Sharon added: "Changed me. And then sometimes - you'll find, I'm sure, with your son as he grows - there are dad questions.

"I took them in a certain room of my house and closed the door and said, 'This is where we do dad questions. And now you talk to me l...