'Radioactive' songstress Rita Ora has revealed that the nerves have kicked in ahead of her upcoming performance at 2013's Glastonbury festival.

The star will perform live on the event's iconic Pyramid stage, which is pictured below, tomorrow afternoon (June 28) and confessed to Capital FM that it is probably "the biggest moment" of her career to date so a lot is riding on it:

"I am so looking forward to it but, wow, I am nervous! I mean, Glastonbury is probably the biggest moment of my career so far."

"It's so huge and so iconic, so it's on my mind a lot right now. I feel so honoured that they've asked me, as a pop act, to be part of the bill considering the line-up this year."

Ora added that she has put more than enough time and energy into rehearsals for it so is confident of delivering a worthy set: "But I'm definitely going to deliver a full-on set, we've been planning it for a while now and rehearsing hard I'm both seriously nervous and excited. But bring it on!"