Kim Kardashian celebrated her eldest daughter hitting a milestone birthday. North West turned the big 1-0 on June 15.

In honor of the occasion, Kim shared a touching tribute on social media, writing, "My sweet special baby girl. I can’t believe you’re 10 years old North. My soul changed the day I met you and I love having you as my best friend."

Kim shared a picture of them sitting courtside at a Lakers game.

North is Kim's eldest child with ex-husband Kanye West. They also share daughter, Chicago, 5, and sons, Psalm, 4, and Saint, 7.

In a recent interview, Kim shared about the joys and challenges of motherhood. She also shared how she and her family celebrate birthdays.

“Absolutely,” she said on the On Purpose with Jay Shetty podcast last month, "And I’m very confident, so every year I write each one of my kids about a four or five-page letter on their birthday, about what the year was like, who their friends are, silly words they’re saying, their favorite foods, all the silly things they do and a little journey of what the year is like.”

“And it’s so fun to see from the first year now, one of ‘em is almost 10 years old. And I know that they’ll appreciate this,” Kardashian continued. “I know that they’ll appreciate everything, even if they might have thought I was being a little harsh on them. I know that they’ll get it because I got it with my mom. I know they’ll get it with me.”

Per PEOPLE, Kim also shared how her mom Kris Jenner influenced her parenting style.

"She just has all this really special, nostalgic stuff around all the time and always tries to make everyone feel so special, but with a gathering so that everyone feels comfortable and can hang around," added the SKIMS founder. "She just loves people in her space. And loves to create these memories. I think that we all got that from her."

"If I can just pass that on to my kids, just the experiences that we have as a family, whether we're just sitting in our pajamas and hanging out. We make the time to be together and I hope that my kids wanna make the time to be together when they grow up with their cousins and their aunts and just the whole family."