Ariana Grande's "Eternal Sunshine" tour stop in Inglewood turned into a heartfelt "Victorious" reunion as former castmates Elizabeth Gillies and Matt Bennett showed up to support their longtime friend.

The pop superstar, 32, performed a three-night engagement at the Kia Forum from June 17 through 20. During one of those shows, Gillies, 32, and Bennett, 34, were spotted in the VIP section, singing along and celebrating the success of their former co-star's first tour in seven years .

Gillies later took to Instagram with an emotional tribute, sharing photos and videos from the night. One image captured the two actresses embracing backstage, a moment that resonated deeply with fans who grew up watching the beloved Nickelodeon series .

A Friendship Nearly Two Decades in the Making

The trio first crossed paths in late 2009 while filming the debut season of "Victorious," which ran for four seasons from 2010 to 2013 . The show also starred Victoria Justice, Avan Jogia, and Leon Thomas III, and became a defining piece of early 2010s pop culture.

In her Instagram post, Gillies reflected on the early days of their friendship, recalling how she discovered Grande's talent before they even began working together.

"Ohhhh, Ari. When we first met, I looked you up on YouTube to see if you had any singing videos because we'd just been cast in a show together and I wanted to suss you out," Gillies wrote .

The actress described finding a video of Grande covering India Arie's "There's Hope" using a looping machine, a technique the pop star has continued to employ throughout her career, including on her current tour .

From Teenage Dream to Touring Phenomenon

Gillies expressed amazement at witnessing her friend command a stadium of tens of thousands.

"This week, almost 20 years later, on your sold out tour, I got to watch you do the same thing (after gently and successfully silencing a room full of tens of thousands of people so the loop would come out clean) and it was remarkable," she wrote .

Gillies hailed Grande as a "visionary" who has remained true to herself throughout her artistic evolution. She described the "Eternal Sunshine" show as "spectacular, visually stunning, deeply immersive" and compared the experience to "watching a movie" .

"Never understand how that voice comes out of you so perfectly and effortlessly every night but it definitely does," Gillies wrote. "You were born to do this and nobody does it like you. Nobody could. So proud of you, my ding. Love you" .

A Heartfelt Exchange

Grande responded in the comments section, clearly moved by her friend's words. The pop star wrote, "my sweet, my dearest, my dingus, my friend, i love you so much always, oh my goodness liz i am sobbing at this" .

Fans of the show celebrated the reunion, describing the moment as a gift for their inner children . The video footage circulating online shows Gillies and Bennett fully immersed in the concert experience, singing every lyric from their VIP seats .

More Reunions on the Horizon?

Grande's Inglewood engagement continues through Saturday night, leaving the door open for other "Victorious" alumni to make an appearance before the tour moves on to Austin, Texas . Victoria Justice, who played the show's title character, has yet to be spotted in the crowd, and fans are speculating whether she might show up before the tour's West Coast run concludes .

Bennett's connection to Grande has a special layer of nostalgia for fans. His character, Robbie Shapiro, shared a romantic storyline with Grande's character, Cat Valentine, throughout the series . The on-screen chemistry clearly translated into a lasting real-world friendship.

A Journey from Hollywood Arts to Global Stardom

The reunion highlights the enduring bonds formed during the cast's formative years on the Nickelodeon set. All three actors are credited across all 57 episodes of the series, a run that cemented their status as fixtures of a generation's childhood .

Gillies' tribute serves as both a celebration of Grande's extraordinary career trajectory and a testament to the genuine friendships that have endured long after the cameras stopped rolling on the Hollywood Arts High School set.

The "Eternal Sunshine" tour marks a significant milestone in Grande's career, representing her return to the stage after a seven-year hiatus from touring. Her ability to command massive arenas while maintaining connections with her roots has become a defining characteristic of her artistic journey.