Jay-Z Books 50 Rooms at Las Vegas Hotel: Report

Jay-Z is taking up a whopping 50 rooms for the lavish opening of the Cosmopolitan of Las Vegas, the New York Post reported Thursday.

The star, who is performing at the event along with Coldplay on New Year's Eve, has "requested the rooms for his entourage and for his personal security," a source said.

As a result, hotel managers have had to rearrange accommodation for other important guests.Celebs expected at the bash, produced by celebrity event designer Colin Cowie, include Jennifer Lopez, Marc Anthony, Alex Rodriguez, Mark Wahlberg, Kristin Davis, Ellen Pompeo and Jessica Szohr, among many others.

Jay-Z's rep would not comment, but a hotel rep said, "We are looking forward to welcoming Jay-Z to the Cosmopolitan of Las Vegas, and as is our policy, we don't disclose details regarding a guest's accommodations or other arrangements while at the resort."

Jay-Z is attending the party with wife Beyonce and is rumored to have been paid up to $1 million to perform for 2,500 invited guests at the new hotel.

Sources said the lavish opening party is a massive spend by Deutsche Bank, which bought the 2,995-room property in 2008 when it was in foreclosure and spent $3.9 billion to complete it.