5SOS on their live show: 'It's high-energy rock and you should go home wanting more'

'She Looks So Perfect' heartthrobs 5 Seconds Of Summer, who hail from Australia, will be performing live at the iHeartRadio Music Festival this weekend and gave fans a taste of what to expect from their set.

The superstars posted a short clip to video sharing site Keek and explained that the audience will be treated to a "high-energy rock show":

"Come to the iHeartRadio Music Festival! We're kind of like Britney Spears... close, but no. I just think it's a high-energy rock show and we want people to have one of the best nights of their lives - or days of their lives - yeah, we just want them to have a good time."

Drummer Ashton Irwin added: "That's the main goal of ours and we want them to go home saying, 'man, I want to see them again'."

The lads, meanwhile, shared an update via Twitter this afternoon (September 19) and confessed that they're all feeling under the weather so hopefully they'll be fighting fit for the event this weekend: "The whole band is sick... So many boogers it's unbelievable #sexy."

Watch a recent interview with the boys here: