Her sister Laura has recently become a mum and the new baby has made Katherine broody, she told the Mail Online in an interview.
She said: "He's gorgeous. I'm obsessed with him. I'm ready for it. I don't want to be a mum who's dragging children on planes around the world.
"I'd like to just stop and have some family time. When I decide to have children I'd really like to take a little bit of time off and enjoy being a mum and putting everybody else before me. I can't wait for that."
She explained that reports in the press that she puts her career before everything else upset her, adding: "I've read a lot that I put work before everything else. I don't think that's the case.
"I read stuff about global domination and me being so ambitious. But if I don't have a family I think that will be a real disappointment to me. It's one of my most wanted things."
Speaking about her wedding day, which happened at Hampton Court Palace in London, Jenkins said: "Thank God for George Clooney! When we found out we'd chosen the same day, we knew we had a chance of keeping our day under wraps as all eyes would be on them!
"I always said I would never sell my wedding and that's why ours was a celebration of love surrounded by 200 of our family and closest friends. We released one photo in aid of Macmillan as our fathers both died of cancer.
"It was an absolute fairy tale - being walked down the aisle by my mother, marrying the man of my dreams and feeling such love from everyone and then absolutely rocking it on the dance floor with our families!"
She added she knew the romance was very quick but that it was meant to be.
"Is it a whirlwind romance? I suppose it is. I've usually had very long-term relationships. I've had three relationships over five years. So yes, for me, this is quick. But when you know, you know. And I absolutely know."
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