The Keeping Up With the Kardashians star shares an adorable snap on her website of her two kids, 2-year-old daughter North and 3-1/2-month-old son Saint, holding hands.

The photo shows the 4-week-old baby's hand grasping his 2-year-old sister's finger. Unfortunately, the newborn's face was not shown.

 She said, "He's my best friend."

A photo posted by Kim Kardashian West (@kimkardashian) on Jan 2, 2016 at 5:02pm PST

The 35-year-old star welcomed her baby boy, Saint West, her second child with husband Kanye West, 38, last month Dec. 5.

Meanwhile, it was previously reported with Us Weekly that Saint will likely be the last child of the couple. An insider dished out that prior to Kardashian giving birth, the reality star's chances of being able to carry another baby were low due to health risks.

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"It's unlikely she'll ever carry another baby," the source told Us Weekly. The same insider added that if the couple wanted to have another baby, it would most likely be via a surrogate.

"It was hard for her to get pregnant so they will feel blessed to have two happy, healthy children," the source said. On another happier note, the mom of two celebrated a low-key New Year’s Eve with Caitlyn Jenner and Kourtney Kardashian, and even shared her New Year's resolution for 2016 on her website last Thursday, Dec. 31.

 Last nights vibes!

A photo posted by Kim Kardashian West (@kimkardashian) on Jan 1, 2016 at 5:36pm PST

2016 A photo posted by Kim Kardashian West (@kimkardashian) on Jan 1, 2016 at 3:10am PST

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"In the next coming months I'd obviously like to shed the baby weight. That's the big one to accomplish first! I'd also like to finish our home next year, so we're working hard to make decisions and meet deadlines so it gets done," Kardashian wrote, adding that she also wants to "learn how to do the splits LOL!"