Too cute!

Kim Kardashian's son and daughter look like they could be twins!

One of our favorite shots of 18-month-old Saint West is this one of him playing in the pool with his famous mama, who simply captioned the post with a heart emoji (we hope Saint will never age). Doesn’t he look like the spitting image of his older sister, North West?

Scroll down for more fun facts about Hollywood’s cutest toddler.

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When is Saint West’s birthday?

The little Capricorn was born on December 5, 2015. He’s almost 2 now, so we hope Kim and Kanye are ready to take on those upcoming terrible twos. But it wouldn’t be the first time the star couple would have to deal with a troublesome tot. Although the siblings appear to have a close bond now — Kim shared a shot of the duo playing nicely together on social media — the 36-year-old admitted that wasn’t always the case.

The brunette beauty previously revealed that she stopped breastfeeding her baby boy because of North. "She would cry so much and try to pull him off me," the social media maven admitted. "She was so jealous she took her little milk box and put it in my bra with the straw sticking out and she wanted to drink while he was drinking."

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But by the time North came around to the idea, it was too late. "This week she goes to me, 'Mommy I'm not mad anymore, you can feed baby brother I won't cry,' and I was like, 'Look honey, the milk is all dried up,’” Kim recalled last April.

Does Saint West have a middle name?

Nope. As In Touch reported back in 2015, the proud parents saw their little bundle of joy as enough of a “blessing” to have his first name speak for itself, Saint. Kim suffered through a condition called placenta accreta during both of her pregnancies, so the fact that Saint arrived happy and healthy was nothing short of a miracle.

What is Saint West’s net worth?

Well, since Saint is still a baby, there’s no question that he will inherit a pretty penny from his parents. To date, Kim and Kanye make up a combined net worth of $230 million, and probably counting.

Will Saint West be expecting a baby brother or sister anytime soon?

Even though Kim discussed the possibility of having another child with hubby Kanye West on a November 2016 episode of Keeping Up With the Kardashians, a source claimed the Kimoji creator isn’t interested in expanding her brood. “Kim doesn’t want any more children — she thinks the two they have are perfect and more than enough,” the insider told Hollywood Life. “Kanye would like a whole bunch more, but then, it isn’t him who has to go through the whole pregnancy thing, so go figure!”

But, that was then! Since Saint West’s date of birth 18 months ago, Kim and Kanye look to be considering a surrogate for their next child. As In Touch reported, Kim is “ready to go” with a surrogate for her third and what she plans will be her final child.

But before their next playmate arrives, Saint and North will have plenty of fun with their cousins who are similar in age: Mason, 7, Penelope, 4, and Reign, 2.

All we ask is that the Selfish author keeps the Instagram pics of her kids coming!

Scroll through the gallery below to see more photos of Saint being adorable.