1. Her production was second to none. Performing in front of a large, eye-shaped screen that nearly reached the arena’s roof, Perry’s choreography featured enormous props, outrageous outfits and a constantly shifting stage backdrop.

She stopped often between songs to interact—via a faux phone call to her mother (a bit that featured a gigantic red analog phone), and by summoning a 6-year-old girl wearing a silver-beaded Cleopatra costume that mirrored Perry’s own from the crowd to the stage. For her recent single “Swish Swish,” she brought out a larger-than-life size basketball hoop and called up a Las Vegas dad to shoot baskets with her.

2. Her clothing was extravagant. She cycled through six different outfits, from a sparkling gold dress to a royal blue jumpsuit, a long-sleeve checkered flannel top and bottom and a black latex bodysuit with polkadot boots. Perry’s short blonde hair marked a change from her traditionally long, brown locks.

3. She held her hits back for a bit. Three of Saturday’s first four songs came from June album Witness: the title track, “Roulette” and “Chained to the Rhythm.” From there, she dug into her catalog for familiar hits like “Teenage Dream,” “California Gurls,” “E.T.,” “Waking Up in Vegas,” “Firework” and “Roar.”

4. She has staying power. Though Witness didn’t meet with the commercial success of its predecessors—only “Chained to the Rhythm” cracked Billboard’s top 5—she still packed T-Mobile Arena with approximately 18,000 fans, most of whom arrived early and stayed until the end.

5. Her opener is also a star. Nearly six years after “Call Me Maybe” became summer 2012’s surprise anthem, Carly Rae Jepsen played it for an excited Vegas crowd. Jepsen’s eight-song setlist, which also included 2015 hits “Cut to the Feeling,” “Boy Problems,” and “Run Away With Me,” had her fans swaying and cheering. Jepsen finished with “I Really Like You,” but did not play her Billboard Top 10 hit “Good Time.”