Kim Kardashian was robbed at gunpoint at a discreet luxury residence in Paris by at least two men dressed as police officers.
A police spokesman said the haul from the robbery, mostly jewellery, was worth several million euros.
A spokeswoman for Kardashian said the star was "badly shaken but physically unharmed". No-one else was hurt in the robbery, police said.
Kardashian's husband, the rapper Kanye West, was on stage at the Meadows Music and Arts Festival in New York at the time of the robbery. He abruptly ended his set, telling fans: "I'm sorry, family emergency. I have to stop the show."
It is unclear if the couple's two children were with Kardashian in home at the time. The star was in Paris for the city's fashion week with her mother Kris Jenner and her sister Kendall Jenner, BBC reports.
