On Sunday's special Keeping Up With the Kardashians,
Kim's sisters and her mom opened up about their first reactions to hearing about the incident in October, and how it affected them psychologically.
"I immediately started crying in the middle of the club," recalled Kendall Jenner, who came with Kim, Kourtney Kardashian and Kris Jenner to the City of Light for Paris Fashion Week.
Kourtney, who was partying with Kendall after Kim retired to her hotel room for the night, recalled getting a text from stylist Simone Harouche, asking, "Who's here [in the hotel] with Kim?"
"Kim called me from Simone's phone seconds later, screaming for help at the top of her lungs," Kourtney recounted. "I literally stopped and I almost fell on the ground."
"Being woken up in the middle of the night with that call was probably one of the worst nights of my life," Kris explained to the KUWTK cameras. "You can't begin to explain the emotions running through your mind when you get that hysterical phone call from one of your children because she had just been assaulted."
Immediately upon hearing the call, Kris said she was already throwing on clothes and running out the door to go comfort her daughter.
"I just remember, I'm running out the door and I grabbed my blanket, knowing that was Kim's favorite blanket," Kris shared. "[I was] thinking, 'I'm gonna wrap her up in this blanket,' as if that was gonna make everything go away."
Kendall explained that she and Kourtney ended up arriving at Kim's hotel at the same time as the police, and nearly having to push their way past authorities to get to their sister.
"I remember bodying people, and just pushing people to the side and running up," Kendall said. "When we walked in, Kim was like, in the corner, sobbing and crying."
The 21-year-old runway model said she could see the trauma in her sister's eyes, and when she want to embrace Kim, "She was like, uncomfortable with me hugging her."
Although for Kim, the fear didn't come to an end when robbery ended. The thieves, who assaulted the star and stole millions in jewels and cash, were dressed like French police officers.
So, when the real cops arrived, Kim felt a renewed sense of fear.
"It was really hard for me when the police started to show up, because they were dressed in the same uniforms [as the robbers] except for the face masks," Kim shared. "So I was like, 'Who do I believe? What's real? What's going on?'"
While all this was going down in Paris, Kim's younger sister, Khloe, was in Cleveland, and was unable to help in the moment.
"You feel so helpless," Khloe remembered of the incident.
After returning home, Khloe and Kourtney came to visit Khloe, and they Facetimed with younger brother Rob Kardashian who wished his sister the best.