"She was chain smoking all night and mixing her own vodka drinks with the bottles on her table," Usmagazine.com quoted an onlooker, as saying.
A witness has revealed that the heiress began table dancing by 12:45 a.m. and later, when the Police tune "Message In A Bottle" began playing, she started jumping around.
"Paris literally kept jumping up and down. She was doing shots that a cocktail waitress kept bringing around," the witness said.
The onlooker also said that when Hilton's on-and-off beau Stavros Niarchos arrived at the spot, she started cuddling him.
"She immediately hopped down from where she was sitting and hugged and kissed him" the onlooker said.
When the lights came on at 1:45 a.m., Hilton told pals that she won't drive and therefore she hired a driver.