Green Day’s lead singer, Billie Joe Armstrong, looks out at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans Alexia Gallegos, right, and Vanessa Pulido hug eachother at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans welcome Green Day at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Relient K at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, looks out at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Hot Mulligan at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Relient K at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Plain White T’s at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, looks out at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans watch in awe as Relient K performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Gym Class Heroes at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Plain White T’s lead singer, Tom Higgenson, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
A Hot Mulligan fan crowd surfs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Gym Class Heroes’ lead singer, Travie McCoy, smiles at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Gym Class Heroes at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, smiles at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans cheer on Gym Class Heroes at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s bassist and backing vocalist, Mike Dirnt, plays the bass during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Relient K’s lead singer, Matt Thiessen, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans welcome Green Day at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, looks out at the crowd during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Green Day’s lead singer, Billie Joe Armstrong, points to the crowd as the Stratosphere looms in the distance during a performance at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Relient K’s lead singer, Matt Thiessen, performs at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
Punk rock fans welcome Green Day at the When We Were Young 2023 music festival on Saturday, Oct. 21, 2023 in Las Vegas. (Daniel Pearson/Las Vegas Review-Journal)
The emo and pop punk fest When We Were Young returned to the Las Vegas Festival Grounds this weekend with Green Day, Blink-182, Gym Class Heroes and more.
Check out the scene in the photo gallery above.
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