JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
5 Seconds of SummerÂ (5SOS)Â surprised some lucky fans on Saturday by personally sellingÂ themÂ tickets to their upcoming show.
The Australian boy band is slated to play its first U.S. headlining concert this fall at The Forum in Inglewood, Calif., and fans were camped out overnight to score tickets.
They were thenÂ shocked to discoverÂ Luke HemmingsÂ and the guys actually manning the venueâ€™s box office.
The group went on to treat fans to a special outdoor, acoustic performance of their hits â€śShe Looks So Perfectâ€ť and â€śAmnesia,â€ť and further surprised by bringing out a mariachi band and assorted goodies, in addition to holding an autograph signing.
â€śWe wanted yesterday to be epic for you guysâ€¦ So we did this lol, cause whatâ€™s more epic than this,â€ťÂ 5SOS wrote on FacebookÂ Sunday morning.
They continued,Â â€śFor us this has been one of the biggest weeks of our lives. Thankyou to anyone who has the albumâ€¦ You guys mean so much to us. Weâ€™d still be practicing inAshtonâ€™s garage if it wasnâ€™t for you. Thankyou thankyou thankyou !! X
Their self-titled debut album was released in the StatesÂ last Tuesday, and is expected to be number one on the Billboard chart.
Check out moreÂ from the event below!
Photo: Getty Images