The Palms' casino floor, already glittering with slot machines and blinking lights, was transformed into a dazzling red carpet, as the likes of Jennifer Hudson, Kid Rock, Paris Hilton, Jennifer Garner and a newly blond Nelly Furtado were among those who posed for the cameras.

And Nicole Scherzinger, making her solo debut from the Pussycat Dolls, gave a performance for the gawking fans, performing her new single with the rapper Lil' Wayne.

While Spears' performance was a showcase, others were delivered in snippets: Akon crooned a bit of his "Smack That" before an award was announced, while the cameras zoomed in on performances from Fall Out Boy and the Foo Fighters mid-performance in their suites, giving viewers the sense that they had happened upon an intimate concert.