The Fourth of July is a monumental day to celebrate in the United States of America and Hollywood celebrities usually go all out commemorating the national holiday with some epic star-studded parties! For Courteney Cox, it was yet another chance to reunite with her Friends co-stars and IRL BFFs, Jennifer Aniston and Lisa Kudrow, along with Oscar-winning actress Laura Dern.Taking to her Instagram page, Courteney treated her 11.5 million (and counting!) followers with two snaps from her Fourth of