The Madden brothers are celebrating the launch of their new project!

Benji and Joel Madden hosted the launch party for their concert streaming platform Veeps All Access on Tuesday evening (October 3) at Poppy in Los Angeles.

Benji had the support of wife Cameron Diaz at the event while Joel‘s wife Nicole Richie was also in attendance.

Fellow celebs in attendance included Nicole‘s younger sister Sofia Richie Grainge, Orville Peck, Reggie Watts, and Chase Atlantic.

During the launch party, Benji and Joel along with their Good Charlotte bandmates took to the stage for a performance.

Veeps – which is a Live Nation-backed concert streaming platform – launched its new All Access offering:, which gives users access to live music, along with unlimited access to a comprehensive library of exclusive live concerts, original music-related content, music films, and more for $11.99/month or $120/year.

If you missed it, you can find out the meal Cameron made for Benji on their first date.

Click through the gallery inside for 15+ pictures of the stars at the launch party…