Australian heartthrobs 5 Seconds Of Summer are set to perform at the Capital FM Summertime Ball next month and they confessed that London's Wembley Stadium is such an iconic place to play they're getting a little nervous about it.

When told that the venue holds a phenomenal 80,000 people, the band's guitarist Michael Clifford admitted that it's a really daunting figure so he's trying not to think about that too much:

"Yes. You know what, I haven't watched any footage of it because I think I'm going to be really, really scared."

The 2014 Summertime Ball will take place on June 21 and other confirmed bands and artists include Pharrell Williams, Ellie Goulding, The Vamps, and Miley Cyrus. The 5SOS lads, meanwhile, will join One Direction on their Where We Are tour as the main support act from tomorrow and the first date will be at Dublin's Croke Park (May 23). 

Watch a clip from the stars' Capital FM interview here: