Rumours have been swirling about the project for more than 15 years
"This is kinda like being at your own funeral," said Billie Joe Armstrong
The 20th anniversary edition will also host sets from Sex Pistols, Jack White, The Pogues and many more
"All the way from the 'Boulevard of Broken Dreams' to Hollywood Boulevard"
Charli had ruffled feathers last week by wearing a "Miss Should Be Headliner" sash
It comes after Charli was pictured wearing a "Miss Should Be Headliner" sash, which fans interpreted as a dig towards the band
"You know I respect you brother"
Footage of the moment was caught by a person in the audience
Frontman Billie Joe Armstrong sang: “Runnin’ away from pain like the kids from Palestine," during the band's debut performance at the Californian festival
Green Day are set to headline the Californian festival later today