There were many familiar faces among the sold-out crowd including Miley Cyrus, Selena Gomez, Mario Lopez, Kellan Lutz, Katy Perry, Sia, DJ Pauly D, Serena Williams, and Adam Lambert.
"Piece of Me" is a 21-song salute to Spears's nearly two-decade-old career, with the pop supernova whirling through an aggressive onslaught of her biggest hits, essentially ensuring that no one who coughed up dough to see classics like "Baby One More Time," "Oops!...I Did It Again," "Stronger," or "Circus" leave disappointed. The night was so heavy on We Love Britney nostalgia that the singer even donned her famous body-glitter nude bodysuit to perform "Toxic."
Tickets for shows through September 2014 are currently on sale.