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 ...

alongside singer-songwriter Dallas Green. The pair headlined the Epidermolysis Bullosa Medical Research Foundation’s annual fundraiser by performing as you + me, their onetime side project. The event, held at the hilltop home of Brillstein-Entertainment ...

Brad Pitt and Courteney Cox reunite almost 20 years after his split from her close friend, Jennifer Aniston. The pair joined Judd Apatow, Pink, Kaley Cuoco and Brad's new girlfriend, Ines De Ramon, at the Rock4EB!