A source tells Us Weekly magazine, "Jennifer Lopez sent her assistant to secure seats by laying her belongings on all the best seats!"
The Maid in Manhattan actress also flew her hairstylist, Ken Paves, to Rome and set him up at the posh Hotel Hassler to do her hair for the big day.
The singer ruffled more feathers at a group dinner at the restaurant Nino on Thursday night by refusing to stick to the informal dress code.
The source adds, "The November 16 welcome dinner was supposed to be casual. But J.Lo, of course, wore a gown. So much for casual."
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