The grandest Las Vegas diva? Frank Marino, ’natch—everyone else plays for second. But the busiest diva action is still on our famous Strip. Proof? Britney’s fans still demand a piece of her at Planet Hollywood. Mariah Carey brought her voice and her cleavage (which should count as three divas) to Caesars Palace. Diana Ross dropped in at the Venetian, her voice sounding 50 years younger than she is. Reba McEntire is giving good diva between Brooks & Dunn at Caesars. Singing impressionist Véronic DiCaire is 50 divas in one when she works Bally’s—including her mentor and Queen Diva Celine Dion, who will return to the Colosseum (which she helped build) in August. And diva-dynamo J.Lo hits Planet Hollywood to do her Jenny-from-the-Block thing in January. Room for more divas? Simple as saying: Move over, dahling.