https://www.yahoo.com/entertainment/tv/articles/ariana-grande-victorious-reunion-nickelodeon-200000539.html

Ariana Grande welcomed some old pals to her recent string of concerts in the LA area. Ari posted to Instagram a carousel of photos from her Eternal Sunshine tour, and one of them showed her posing and smiling with Elizabeth Gillies and Matt Bennett, two of her co-stars on the Nickelodeon show Victorious. There were also photos of her posing individually with Elizabeth and Matt.