Khloe Kardashian branded her mother Kris Jenner a "psycho" for staying in touch with Lamar Odom.

Khloe Kardashian and Kris Jenner

Khloe Kardashian and Kris Jenner

The 31-year-old star was furious with the family matriarch when she discovered she was still in constant contact with her estranged husband, even after she decided to finally move on with their divorce.

In 'Keeping Up With the Kardashians' scenes filmed before Lamar's near-fatal overdose in October, Khloe confronted Kris after she gave the basketball player her new phone number.

She fumed over the phone: "I was removed from this whole situation. I don't give a f**k, are you psycho?"

And Khloe's sister, Kim Kardashian West - who had earlier advised her mother not to speak with Lamar - branded Kris a "piece of s**t".

However, the 60-year-old star refused to apologise and insisted she hadn't done anything wrong.

She said: "He's had so many issues he's been dealing with.

"Lamar doesn't have a lot of extended family. When he reaches out I'm going to respond."

Kim slammed her mother as "stupid" while furious Khloe - who split from Lamar in December 2013 - admitted she felt particularly hurt because she sided with Kris when she divorced her stepfather Caitlyn Jenner, who was previously known as Bruce.

She said: "When you wanted to be mad at Caitlyn, the first thing I did was be on your side and I protected you and I defended you. And that was my dad of 23 years you crazy b***h!"

The former 'X Factor' host told her mother she felt they needed a "major break" from each other, so Kris agreed and decided not to go on their family vacation.

Following Lamar's collapse from a drink and drugs binge, Khloe again put her divorce on hold as she felt it wasn't the right time to go through the process.