Will JLS take you to the moon?
JLS: We need to go to the moon to beat this!
They've been to almost all of our balls so far, but the boys admit this year's Summertime Ball will take some beating.
JLS have told us that today's performance at the Summertime Ball will be something very special indeed. Talking to Roberto and Margherita Taylor backstage, the boys were super-excited to bring their hits to 80,000 fans at Wembley Stadium.
"It's incredible to perform in front of so many people", said Marvin. "We don't do it every day! Wembley is a huge stadium and we've heard nothing but good things about performing here."
Having played last year's Summertime Ball and both nights of the Jingle Bell Ball, they admitted that today's huge show will take some beating.
We need to go to the moon to beat this, said Marvin.