However, on Friday evening, Kim took to Instagram to give her fans the first look at the newest member of the Kardashian-West family - and announced his name.
"Beautiful Mother's Day", Kim shared on social media, via a screenshot of a text from her husband, which includes a picture of their baby boy snuggled up in his crib.
Back in January, Kim confirmed that they were expecting their fourth child during an appearance on Watch What Happens Live.
The youngster joins his older sisters, North West, 5, and Chicago West, 1, and older brother Saint West, 3. Kanye West is so wild with these baby names. While she didn't reveal his name, she said that "he's ideal".
On December 7, 2015, following the birth of son Saint, the couple waited two days. In the week that has followed, there has been much speculation about what the most famous couple in pop culture would choose as the name of their new baby. "I'm low-key freaking out", Kim told Kylie Jenner, 21, during the episode. "So, I feel really calm and at ease..."
Speaking in April, Kim made it clear that she wanted to have another child. "I got drunk at our Christmas Eve party and I told some people", Kim admitted to Andy, explaining, "I can't remember who I told because I never get drunk".