Hilaria Baldwin "really really likes" being pregnant.

Hilaria Baldwin

Hilaria Baldwin

The 33-year-old star is thrilled to be expecting her fourth child with her husband Alec Baldwin and has revealed this one was planned.

She said: "I never knew how many kids I wanted to have. I didn't know how much I'd like it. And I really, really like it ...

"We were like, 'Oh, should we have another kid?' We were like, 'You know what? Let's try something different - let's try.' [With] the other ones, it's not like we were like, 'Oh my God, how did this happen?' But this is the only one we [planned].

"I've had so many [kids] because I really like them and we have such fun times. I'm going to have four kids in a little over four years and it's just one of those things where I'm going to let life lead me in that direction."

And Hilaria's daughter Carmen, four, is thrilled about being a big sister.

Hilaria - who also has Rafael, two, and 13-month-old Leonardo - added to People magazine: "She [Carmen] was like, 'I can't wait to tell everybody at school!' We're walking out the door and she's like, 'There's a baby in my mommy's tummy!' I'm like, 'Stop it! Not yet! We're not telling yet!' That's the reason I didn't tell her before, because everybody would have known.

"She was a little bit disappointed. [She said,] 'How about you have a girl first, then you can have another boy?' I was like, 'It doesn't work that way! I don't get to choose.' She's like, 'No, you don't understand, Mommy. It's going to be a girl.' I was like, 'No, I promise. I promise you it's a boy.'"

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