Kate Bosworth wants to have children "soonish"

She said: "[Having children I hope] will be coming soonish. I don't know when, but at some point."

But before she does have a child of her own, Kate enjoys being a stepmother to 19-year-old Jasper, Michael's daughter from his marriage to Jo Strettell, and they have a "very close" relationship.

Discussing how relieved she feels about being out of her 20s, Kate said: "I'm so glad they're in my rear-view. I have a 19-year-old stepdaughter who's going into that phase.

"She and I are very close. We spoke the other day and I said, 'Look, I'm not going to sugarcoat this for you, but 19 to 23 - it's a rough ride.' "

And when Kate first met Michael, 46, when he directed her in 'Big Sur', she wasn't put off by the fact he had a daughter, who was 14 at the time.

She told Stella magazine: "I was thrilled; I've never had a sister, so I was hoping I'd experience something I'd not had before. I felt very protective of her - when we met it was an immediate click.

"Although recently I heard her tell this story from her point of view, and she said, 'Oh, yeah, I was ready to go into that meeting hating her.'

"I had no idea, she's so nice! The idea of her hating anyone is unthinkable. I think she was nervous of the 'actress' element... so I understood that.

"That's a part of my life, but when I'm home, that's not me at all. I think she appreciated that pretty quickly."

The 'Still Alice' star admitted she felt like she'd been "punched in the face" when she first fell for Michael.

She said: "For me it was like having a mentor, and I'd never had that. I went to meet him for a coffee, and when he walked in, I felt like I was going to fall off my chair. Love punched me in the face. From that moment, that was it."

The blonde beauty also hadn't even thought about ever getting married until she met her director partner.

She recalled: "I never really thought about it very much. I wasn't the type of person who thought about the dress... It wasn't until I met the man that all those details fell into place."