Paris Hilton was without any of her BFFs du jour at her 26th birthday party in Las Vegas this past weekend. Nicole Richie was supposed to show -- Paris even announced on the microphone that she was "on her way" -- but she never made it. The most recent "victim" of a sex tape release, Kim Kardashian, wasn't even invited, despite being one of Paris' best friends during the past year. "She didn't want Kim on the red carpet stealing her thunder," said a source. If this is true, it's totally ironic, because Kim Kardashian was the least of Paris' attention-stealing problems on Saturday night. This really just makes me love Britney even more. Happy 26th, Paris! You're getting old, beyotch, in more ways than one.