Kardashian, who frequently visits Paris from her home in California for shopping and fashion events, was reportedly "badly shaken but physically unharmed," according to a spokesperson.

Kardashian's attack comes months after terrorist plots carried out by supporters of the ISIS group have hit Paris and Nice in France, and cities in Germany and Belgium. During the robbery, Kardashian was locked in the bathroom of her private apartment in Paris while five masked men took jewelry worth millions of dollars. She was traveling with her family in France for Paris Fashion Week.

Paris Mayor Anne Hidalgo condemned the attack on Twitter Monday, noting that Kardashian "will always be welcome in Paris."

Despite a bombing in March at the Brussels airport and November terrorist attacks at nightlife venues across Paris, U.S. tourism to Europe was up 5 percent in April, largely because many of those trips were booked before the attacks, the New York Times reported. More recently, some tour operators said they have seen a reduction in bookings in recent months, Ibtimes reported.

212