Kourtney Kardashian marked her 37th birthday today with friend,Jonathan Cheban and Simon and family;Kim Kardashian and Kanye West today,April 18. Her mum and sisters wished her a happy birthday with throwback photos and messages.Of all the messages her sisters sent to her,Khloe is my favorite. She wrote;
'Kourtney, you are my best friend and I couldn't ask God for a better big (little) sister. I'm thankful everyday to have you in my life. You have know idea how much I love and admire you!
'You're 100 percent real, all the time. My life would be nothing without you in it!!! Happiest birthday to the yin to my yang, the Bey to my Jay, the milk to my cookies, the Lady to my Tramp, LOL!!! Love you, Kourt!'