updated 09/01/2010 AT 1:00 PM ET
•originally published 09/01/2010 AT 1:45 PM ET
The ban comes after several Las Vegas insiders claimed that the heiress might be blackballed from nightclubs. After the car in which she was riding was stopped, Hilton, 29, was taken inside the Wynn, where it was allegedly discovered that she had cocaine in her purse.
Coinciding with the ban, Wynn Las Vegas also announced in a vague statement that Hilton’s boyfriend, nightclub executive Cy Waits, has been “separated from the company and is free to pursue other interests.” No further comment or details was provided.