Former friends Courteney Cox and Brad Pitt reunited at a recent event — without Jennifer Aniston. Cox and Pitt, both 60, posed together at a Rock4EB fundraising event on Saturday, Sept. 21, in Malibu, Calif., marking a rare moment for the two, who were close during the “Once Upon a Time… in Hollywood” actor’s marriage to Cox’s best friend.

Brad Pitt, Courteney Cox, Pink, Elizabeth Olsen and Kaley Cuoco were among the celeb guests at Saturday’s seventh Rock4EB! fundraiser.

The event, which began in 2013, raises funds for research and to find a cure for the rare skin condition epidermolysis bullosa. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer ...

Something special happened in Malibu on Saturday. Global superstar Pink took a break from her record-setting Summer Carnival tour to hit the stage at a far more intimate venue than the arenas she’s been selling out in recent months by performing at Rock4EB!