In the world of Kardashians, drama is practically a second language. But leave it to Kourtney Kardashian to remind us that blood is thicker than contour.

The Poosh founder, at the wise age of 44, took to social media to shower her sister Kim with birthday love. This heartwarming gesture comes just weeks after an episode of their show 'The Kardashians' spilled the tea on a little sibling tiff. Kim, never one to mince words, claimed that Kourtney's kids were “concerned” about their mom, and even hinted at a covert text thread dedicated to airing family grievances about the star.

However, Kourtney, decided to put the 'past is past' philosophy into action. On her Instagram story, she shared a selfie of her and Kim, accompanied by a touching message. “Happy birthday to my first sister @kimkardashian,” she penned. "Thank you for all those years of bossing you around and you actually listening to all of my crazy ideas. People think the fights they’ve seen on TV are bad - if only they got to witness the hair pulling, nail digging ones from early high school. The joys of sisterhood. I love you deeply forever and always. May God bless this year with love and happiness and abundant joy.”

And if that didn't warm your heart enough, Kourtney gifted us a time capsule of their relationship through several nostalgic photos.

So, there you have it, folks. Kourtney Kardashian, reminding us that through all the glitz, glam, and occasional squabbles, family is what truly matters. Cheers to sisterly love!