Katherine Heigl Doesn't Want To Get Pregnant: 'I Would Be The Biggest, Whiny, Brat In The Universe!'

The Life As We Know It star revealed that she’s planning on adopting baby number two, but isn’t interested in having one of her own right now.

Calling herself “a big baby,” Katherine Heigl made it pretty clear that, while she definitely wants to have more kids as soon as possible, she doesn’t want to be pregnant to have them. Katherine, 31, and her husband Josh Kelley, 30, adopted their daughter Naleigh, 22 months, from South Korea last year, and now Katherine wants to make Naleigh a big sister as soon as her adoption is legal. “I can’t wait to have another baby,” she says, but add that it’s “terrible idea for me to get pregnant.”

Read Katherine’s comments on her first adoption

So is it the body changes, the morning sickness or something else that has Katherine gun-shy? She admits that her plan to adopt baby number 2 is “all just for selfish reasons.”

“I have a lot of physical issues as is. I think it is a terrible idea for me to get pregnant,” she told Life As We Know It co-star Josh Duhamel, 37, (and a room full of journalists) while publicizing their new romantic comedy. “I would be the biggest, whiny, brat in the universe, although my husband has promised to put up with it.”

Josh — who admitted that he and wife Fergie, 35, are thinking about starting their own family (“My wife has a plan,” he said, “I’m just going to show up when she is ready.”) — was curious about the fact that, even though Katherine and Josh have had little Naleigh for over a year, the adoption isn’t actually official yet, partly because it’s “impossible to get a court date.”

Katherine’s daughter, Naleigh, is definitely a “daddy’s girl.”

“It’s all formalities,” she said. “You have to go before a judge in the state of the adoption and finalize it and then we all have our picture taken and sign a piece of paper and then we can start the process of adopting another child.”