Once a Wildcat, always a Wildcat. Some of Olivia Rodrigo‘s former High School Musical: The Musical: The Series castmates showed their support for the 21-year-old pop star by coming to see her Guts World Tour show at Madison Square Garden Tuesday night (April 9), after which they all met up backstage to pose for a photo.
In grainy videos taken by fans at the concert, Disney actors Larry Saperstein, Julia Lester, Joe Serafini and Frankie Rodriguez were among the 10-thousand-plus fans at the venue, where Rodrigo played her final of four New York City Guts shows. After she performed tracks from Guts as well as…