PARIS HILTON arrived home at 5 a.m. after a long night of partying – BACK TO HER OLD LIFE!

Paris is as happy as a manila clam at Il Sole in this excellent and revealing photo. It really captures who she is: the 21st century quintessential party girl. I sincerely hope that she does more than just party her nights away. She can actually help people in the real world like Audrey Hepburn, Angelina Jolie and Mia Farrow. And the real world is not Koi.