SLIP INTO THE LITTLE BLACK DRESS. SNAP ON THE silver cuff links. Now you're ready to let loose with the stars (including NYPD Blue's Sharon Lawrence, here and on page 112). In the following pages, you'll sing "Happy Birthday" to Bill Clinton, take tea with Queen Elizabeth, trick-or-treat with Anne Rice and smoke a cigar with Demi Moore. What—turning green? Hollywood's premiere party planner can help you design a do of your own. Have a blast. See you in the morning.