Paris Hilton Old Reliable

4/25/2010 4:42 AM PDT

Paris Hilton -- Old Reliable

There is something safe and comforting about seeing Paris Hilton party it up in Las Vegas like the free and single woman that she is.

To further hearken back to her heyday, Paris was joined at Vanity in the Hard Rock by sister Nicky, greasy BFF Brandon Davis, and Lil Jon.