Kim Kardashian gives her four children the same personalized gift for their birthdays every year. The 3rd year law student said she gifts each of her children handwritten four or 5-page letters addressed to each of them.

“It’s so fun to see from the first year now,” she revealed on the latest episode of the “On Purpose with Jay Shetty” podcast.

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“One of ’em is almost 10 years old. And I know that they’ll appreciate this,” she added, referring to daughter North West, 9.

Kim is also mom to daughter Chicago, 5, and sons Saint, 7, and Psalm, 4, by music producer Kanye West, aka Ye.

The handwritten letters and Kim’s many absences from home may explain why her eldest son, Saint, apologized to her recently for being rude and saying she meant nothing to him.

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“Mom, I’m very grateful for you. I know I’m rude to you a lot. I say you’re nothing to me,” he said in a Mother’s Day video on Instagram stories.

He added: “I love you more than anything. You’re my favorite in my family. I even love you more than my cute little brother Psalm. I love you. Never forget that.”

Saint has displayed anti-social behavior in the past. He once told Kim’s social media followers, “Hi, weirdos!” He also said in another video, “If you’re watching this, I hate you!”

Kim has previously said she sleeps with one eye open.

“There are nights I cry myself to sleep,” she told Shetty on his podcast. “Like, holy sh*t, this f**king tornado in my house. Like, what just happened?”

Watch the video below.