Kourtney, 39, and Kim, 37, exchanged words after reliving their fight through the show's Season 15 premiere.
"Watching this fight actually gives me chills #KUWTK," Kourtney tweeted. "We all have our own priorities. Mine is being a mother."
"And mine is not?" Kim responded. "The shoot was with our kids!!!!! My #1 priority is being a mother as well and I can work too, so can you!"
And mine is not? The shoot was with our kids!!!!! My #1 priority is being a mother as well and I can work too, so can you! https://t.co/3bApFwwjcr— Kim Kardashian West (@KimKardashian) August 6, 2018
Kourtney feuded with Kim, sister Khloe Kardashian and mom Kris Jenner about the schedule for a photoshoot in the episode. Kourtney is parent to three children, Mason, Penelope and Reign, with ex-partner Scott Disick.
"We're ride or die. But i don't accept the way we criticize and judge each other anymore. My personal growth doesn't allow it," the star wrote.
"I wasn't wanting MORE work, i already felt spread thin," she explained to Kim. "Being a good mother also has different meaning to each of us. You're an amazing mother, I'm not taking that away from you."
And i do. But i wasn’t wanting MORE work, i already felt spread thin. Being a good mother also has different meaning to each of us. You’re an amazing mother, I’m not taking that away from you. https://t.co/ZMpEo5nlwL— Kourtney Kardashian (@kourtneykardash) August 6, 2018
Kim, who is also parent to three children, said she and her sisters are ultimately family and will always have a relationship.
"dont ever get it twisted, me Kourtney and Khloe are GOOD! ALWAYS!!!! Never question that!" she tweeted.