So many big names! Who doesn't love Ariana Grande? Apparently no one!

From as young as North West to fellow musicians Camila Cabello and Niall Horan, to fans like Brooklyn Beckham and his girlfriend, half of Hollywood turned out for the young diva's LA concert Friday night.

In Kardashian news -- Kim cut her short bob even shorter (if you can call removing extensions a haircut) and Nori sported a blowout! The little tyke head her hair in a high ponytail -- not unlike Ariana's signature look. In fact, Nori got to meet her idol backstage at the show and Ariana even held Kanye's daughter in her lap, which was adorable -- all documented on Snapchat, of course.

Meanwhile, Niall Horan of One Direction; Camila Cabellow, formerly of Fifth Harmony; and Brooklyn Beckham, along with his French girlfriend, were also in attendance to take in the show. What a good-looking audience!