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  (PHOTO:Twitter/Kim Kardashian)
  Kim Kardashian with family.

Kim Kardashian admits that she once judged sister Kourtney Kardashian for having children out of wedlock.

In an interview with Cosmopolitan magazine, the 32-year-old mother to be revealed that she once chastised her older sister Kourtney about her choice to have children without exchanging vows with boyfriend Scott Disick.

"I was like, 'You're not married! How could you do this,'" Kardashian revealed to Cosmopolitan recently. "I was really firm and strict, But she was like, 'Marriage isn't what I want.' And later, I realized she had a better family life than I did."

The sentiments seemed to be the same expressed by the sole Kardashian brother, 25-year-old Rob, when he spoke to E! News last month.

"You gotta be married, first that's my rule: marriage then baby!" the male Kardashian told E!

Still, he maintained that his sister's upcoming bundle of joy was a blessing.

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"It's beautiful. It's a blessing. The new year, we've got another child coming, so that's great," Kardashian said of his sister in an E! News report. "Kim's never had a baby, so it's going to be a beautiful blessing."

Kim told Cosmopolitan that she has thought about marriage with West, but is in no rush to rush into anything.

"[Marriage] is something I know that we both want in our future, but I don't have this sense of urgency about it," the reality television star told Cosmopolitan. "I have this best friend who understands me and helps me through all my tough experiences, and vice versa, you know? It just feels like this is it for me."

At the beginning of the year, Kardashian announced that she and West would be expecting their first child.

"It's true!! Kanye and I are expecting a baby. We feel so blessed and lucky and wish that in addition to both of our families, his mom and my dad could be here to celebrate this special time with us," Kardashian wrote on her Celebuzz blog.

The pair's child is expected to arrive in July, according to E!.