Rihanna certainly knows how to make a comeback.
The songbird's first big NYC bash in honor of her album "Rated R," which was released Friday, was anything but ordinary.
Although the 21-year-old didn't show up at the Tuesday-night fete (which began at 10) until 1 a.m., several of her guests, including Jay-Z, P. Diddy and Fabolous, arrived, er, promptly at midnight at the Juliet Supperclub.