It was a sweet night for JoJo Siwa.
While her big 16th birthday is still a month away, the Dance Moms alum and YouTube star got the celebrations started early with a birthday party at the W Hotel in Hollywood.
Famous faces like reality star kids North West and Penelope Disick were in attendance, as was fellow YouTuber Colleen Ballinger and Dance Mom Abby Lee Miller.
Judging by the guest list, friends of all ages got to have fun at Siwa's dream soirée, hosted by Nickelodeon. The event will be part of a Nickelodeon special, JoJo's Dream Birthday, set to air on May 18 at 8 p.m.
There was also no shortage of spectacle as a marching band made its way through the party and guests munched on sweet treats, including cotton candy.
It seems no detail was left behind for the sweet 16 birthday girl.
While the wait is officially on to see exactly what Siwa had in store for the big night, check out the adorable red carpet arrivals in E!'s gallery below:
JoJo caught up with her pint-sized reality star fans.
The Dance Moms star was smiling from ear to ear.
The Dane Moms alums posed together with big smiles.
The fellow YouTubers held up peace signs for the cameras.
The Fuller House star had a fun night out with her two daughters.
The birthday gal got a hug from Kim Kardashian's famous daughter.