She's just been through the most traumatic experience of her life.

But rather than letting herself fall apart, Kim Kardashian is desperately trying to hold it together - for the sake of her young children, the Daily Mail reports.

"They don't know what is going on, thankfully," a source told Entertainment Tonight. "She tries not to cry in front of North, but it's been tough."

And while Kim and husband Kanye West have flown home with their three-year-old daughter North and baby son Saint, things are far from normal.

Advertisement

"She still gets emotional thinking about the incident," the source said.

"I don't think the flashbacks will go away anytime soon though. It's going to take a while for those to stop, as with any traumatic experience like that."

Kim was alone and asleep in her exclusive rented Paris apartment, when a gang of armed robbers somehow got inside on Sunday night.

Police in Paris say they are investigating the heist in which Kim was tied up and locked in a bathroom, before the men, described as white, French and middle aged, stole $10 million worth of jewelry.

No arrests have been made.

Adding to Kim's trauma, is the realisation that the incident, while upsetting, could have been much worse.

Said the source: "The scariest part for her throughout this experience is the fact that it could have been a lot worse, and she couldn't imagine what that would have been like for her children."