'Wild' songstress Jessie J is "feeling prepared" to rock out at the Capital FM Summertime Ball this weekend.

The hitmaker is set to perform at the annual music event at Wembley Stadium this Sunday (June 9).

Jessie is primed for her stage show, telling Capital Breakfast radio show: "I'm feeling prepared, I'm feeling ready. I'm feeling ready to run around that stage."

Jessie also teased there will be a few surprises included in her set.

She added: "I'm going to keep it a total surprise. Right now it's all kind of in question."

The Capital FM Summertime Ball 2013 boasts a star-studded line-up, including performances from The Wanted, The Saturdays, Ellie Goulding, Olly Murs, Taylor Swift, will.i.am, with international superstar Justin Timberlake hosting the event. 

Listen to Jessie's new track 'Wild' here: