Kim Kardashian recently revealed that she's never officially named her children before they were born and she's had a chance to bond with them.

However, the reality TV star and businesswoman said that doesn't mean she doesn't mull over a few options beforehand.

During an appearance on "Jimmy Kimmel Live!" Monday night with her sisters Khloe and Kourtney, Kardashian spilled some family secrets when it comes to the baby-naming process.

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"We all weigh in. I definitely take a family survey but it's usually after the baby is born and we're trying to figure out what the baby looks like," Kardashian, a mother of three, told late-night host Jimmy Kimmel. "I usually go about three or four days nameless until I feel that it really connects with the baby."

Kourtney admitted she's even tried out different names on different names on occasion — a process that once spanned an entire week.

"One day, Reign, his name was Preston for one whole day. I [knew] in my soul his name is Reign, and Scott didn't believe me," Kourtney explained, referring to her 4-year-old son. "It didn't work out."

Kimmel then asked Kardashian, who's expecting baby No. 4 via surrogate with husband Kanye West in May, if she has any names in mind.

"I actually do not, but I was Googling Armenian boys names last night ... and I couldn't really find anything," Kardashian said.

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But then Kardashian clarified that there is actually one name she's considered.

"I was truthfully thinking about just naming him Rob, my brother, Rob," the 38-year-old added. "But then it's like North, Saint, Chicago, Rob. It doesn't like really go, but I really was feeling that or like Robert, and my brother approved it. So that's like, our one kind of name. Rob West."

A source told Fox News in January the couple are expecting a baby boy — which would be the second son for the pair, who also share son Saint, 3, and daughters North, 5, and Chicago, 1.

In August, a source told Entertainment Tonight that West and Kardashian wanted four children: two girls and two boys.

"Kim and Kanye have always wanted a big family. Kim loved growing up with a lot of siblings and wants the same for her children," the source said. "[Kanye would] have as many [kids] as possible."

Fox News' Jessica Sager contributed to this report.