Most of the cast members from Keeping Up With The Kardashians are adults with children. Every time one of their kids has a birthday, fans become the first to know how they have celebrated. This time, on Kim Kardashian's second son's birthday, a lot more than party pics were shared. The beauty mogul shared some adorable pictures with her son Saint West and revealed a secret ritual that she follows every year.

Both Kim and Kanye West first started as friends in 2003. After a few years, their friendship blossomed into collaborations and working together. However, it was almost a decade later when the Keeping Up With The Kardashians star acknowledged herself as the man's proud girlfriend. The two were soon expecting their first child, North West, and they tied the knot in the May of 2014. The 43-year-old rapper and Kim have three more kids - Psalm West, Chicago West, and the birthday boy Saint West. 

Related: KUWTK: North West Models New SKIMS Kids Collection Alongside Mom Kim

The five-year-old was born on the 5th of December of 2015, and his birth was also featured on an episode of Keeping Up With The Kardashians. The proud mama recently shared some cute and emotional pictures with her 5-year-old on her Instagram. In the first picture, the mother and son duo can be seen playing around, as Kim is pouting, Saint is smiling while ducking in her arms. The second picture is even cuter with Kim pouting again, but this time she is passionately hugging Saint and displaying every bit of her affection. In the third picture, the mommy of four is kissing her birthday boy. Check out the pictures below:

Kim has captioned the pictures with a sweet note, revealing some interesting things about her special ritual with her kids. She wrote, "My baby Saint turns 5 today. One of my life's soul mates," acknowledging the fact that she considers Saint to be one of her soul mates. However, it gets exciting after this, as she reveals that she has a secret ritual she follows every year for her kids. She said, "Every year I interview my kids and ask them the same exact questions about life. Saint- I can't wait to see how you've grown and how you answers these questions as a 5 year old and show them to you when you're big.

The SKIMS founder's ritual sounds really cute, as well as inspiring. However, the fans might have to wait for years to see those videos. For now, the comment section is full of interesting replies and greetings. Grandma Kris Jenner has also shared her greetings by posting an image of herself with her grandson. In the caption of her IG post image, the Momager called him "sweet angel boy grandson Saint!!!" Aunt Khloe Kardashian wrote, "We love you so so much Sainty!!!!!!!" On behalf of all the Keeping Up With The Kardashians fans, Happy birthday, Saint!

Next: KUWTK: Kim Kardashian Faces Backlash Over New SKIMS Maternity Range

Source: Kim Kardashian/Instagram, Kris Jenner/Instagram