Vanessa Hudgens, Ashley Tisdale and more attend Selena Gomez's star-studded Los Angeles show

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Selena Gomez is making the stars dance -- at her show, that is!

The 23-year-old pop star performed at the Staples Center in Los Angeles on Friday as part of her Revival tour, and the crowd was jam-packed with A-listers.

WATCH: Selena Gomez Adorably Dances With Audrey Nethery, Who is Battling Rare Disease

Dressed in cropped black pants, strappy white sandals and a sparkly jacket, Disney star Peyton List stepped out to the show with her pals, Aidan Alexander and Bailee Madison. Inside the venue, the trio couldn't stop gushing over Gomez, singing along to every word.

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There was also a mini High School Musical reunion, with both Ashley Tisdale and Vanessa Hudgens in attendance. Tisdale, 31, rocked a black-and-white striped dress, which she paired with over-the-knee boots and black leather cross body bag. Hudgens, 27, kept it cool in an orange jumpsuit, a long black jacket and snakeskin purse.

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"Rockin out to @selenagomez with my girl @vanessahudgens," Tisdale later wrote on Instagram. "So proud of you Sel!! You're doin it!!!!"

Rockin out to @selenagomez with my girl @vanessahudgens. So proud of you Sel!! You're doin it!!!!

A photo posted by Ashley Tisdale (@ashleytisdale) on

Rockin' out, indeed! An eyewitness tells ET that the two were having a blast taking selfies from inside the Hyde Lounge at Staples, which was stocked with an open bar, hot dogs, macaroni salad and pulled pork sandwiches as part of Call It Spring's private party.

Their former Disney colleague, Joe Jonas, was there as well. The 26-year-old singer opened Gomez's show with his pop rock band, DNCE. An eyewitness saw Tisdale "dancing a ton" to their hits with her husband, Christopher French, as she waited for Gomez to take the stage.

RELATED: Bea Miller: 5 Things I learned From Opening on Selena Gomez's Revival Tour

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Also spotted were Halle Berry, Tobey Maguire, Jonathan Bennett, Cody Simpson and Courteney Cox.

At one point during the show, Gomez took a moment to reflect on the recent tragedies that have shaken the world, including a mass shooting in Dallas that took the lives of five police officers, and the deaths of two men, Alton Sterling and Philando Castile, who were shot and killed by police in two separate incidents in Baton Rouge, Louisiana, and Falcon Heights, Minnesota.

"So much craziness is going on, and I think people forget. I think people forget that it's -- we're not gonna get anywhere with violence," she exclaimed. "This next song is called 'Kill Em With Kindness.'"

Gomez pulled out all the stops for her star-studded show, donning a number of glitzy performance ensembles. Other songs from her set list included "Who Says," "Same Old Love" and "Hands to Myself."

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WATCH: Selena Gomez Skips Taylor Swift's Fourth of July Party, Hosts Her Own Bash!

Gomez is currently traveling the country as part of her tour, but that hasn't stopped her from finding some time to relax with friends. Last weekend, Gomez celebrated the Fourth of July with her gal pals by her side -- and it appears she even played host!

To hear more on her festive party, watch the video above.

See more from Selena Gomez in the gallery below!

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Selena Gomez Paris Fashion Week
PARIS, FRANCE - MARCH 08: Singer Selena Gomez is seen on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez is seen on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez is seen on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez leaves the 'Cafe de Flore' on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez leaves the 'Cafe de Flore' on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez leaves the 'Cafe de Flore' on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Singer Selena Gomez leaves the 'Cafe de Flore' on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Selena Gomez arrives at Charles-de-Gaulle airport on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
LOS ANGELES, CA - MARCH 07: Selena Gomez is seen at LAX on March 07, 2016 in Los Angeles, California. (Photo by GVK/Bauer-Griffin/GC Images)
PARIS, FRANCE - MARCH 08: Selena Gomez arrives at Charles-de-Gaulle airport on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - MARCH 08: Selena Gomez arrives at Charles-de-Gaulle airport on March 8, 2016 in Paris, France. (Photo by Marc Piasecki/GC Images)
LOS ANGELES, CA - MARCH 07: Selena Gomez is seen at LAX on March 07, 2016 in Los Angeles, California. (Photo by GVK/Bauer-Griffin/GC Images)
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