is not planning to have another baby.
The 31-year-old actress is currently happy to devote all her attention to her four-year-old daughter Suri - her child with husband Tom Cruise
- but admits she could change her mind in the near future because she thinks it is good to have a large age gap between siblings.
Asked if she was planning another baby, she said: "Maybe in a couple of years, but right now I want to make sure I'm really there for Suri.
"I'm the youngest in my family. My closest sister is five years older than me, and the next one is nine years ahead of me, so I was a bit of an only child, and I liked it! I liked having all of my mom's attention, and sometimes I think I still do."
The 'Romantics' actress - who has never spent more than 10 days away from her 48-year-old husband - also admitted she does her best to maintain normality for Suri, even when she and Tom have to travel for work.
She explained to America's Marie Claire magazine: "We travel a lot, and so for me, it's keeping a daily schedule for Suri that never changes. We wake up and we do the same thing. She does her chores.
"If she doesn't get her chores done, I notice she's not really herself. She has to make her bed, she has to take her dishes to the sink, she has to put her clothes in the laundry - you know, that basic stuff."
Katie acknowledges she has an "amazing" life with Tom, and is adamant neither of them take their success for granted.
She added: "It's really exciting. Tom's as big at home as he is on the movie screen. He's so passionate about everything, whatever he's doing. When he's being a dad, he's right there; he's giving it his all. It's inspiring and it's fun. It's an amazing life, but we always remind ourselves of how incredibly lucky we are."