It is getting really competitive in the Kardashian-Jenner family. Khloe Kardashian thought she held the honor of treating her nephew, Mason Disick, to his first sleepover. However, her sister Kim Kardashian quickly shot her claim down.

Khloe tweeted about the experience, which took place over the weekend. She also gushed about her sister Kourtney Kardashian, who did not appear to be too comfortable being away from her eldest child.

Unfortunately for Khloe, her claim was immediately debunked by her sister Kim. She called out Khloe and said that their nephew’s first sleepover was actually with her and it occurred out of town in New York. Khloe instantly passed the blame on to Kourtney. She said that it was Mason’s mom who said that it was his first sleepover.

According to the Mirror, Mason joined his aunt Kim and her family when she went to New York over the 4th of July weekend. At that time, Kourtney stayed in Malibu, where she was seen celebrating with her daughter Penelope. Apart from five-year-old Mason and three-year-old Penelope, Kourtney also has one other child with former partner Scott Disick. Reign Disick is now eight months old.

This time, Mason did not have to go far from home to sleep over at his aunt Khloe. The Disick kids live with their mom in a sprawling Calabasas mansion, which is just a block away from Khloe’s house. Many members of the family like Kris Jenner, Kylie Jenner and the West family also live close by.