British singer/songwriter Rita Ora dazzled in red on the Pyramid Stage during the third day of the Glastonbury Festival in Somerset. The 22-year-old former X-Factor judge was making her first appearance at the event, one of the largest music festivals in the world.

"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," she said ahead of her performance, adding, "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."

"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!"

As she performed her hits, including R.I.P., How We Do (Party) and Hot Right Now, her interesting costume choice - a long tasselled red dress - was also a treat for fans.

"We did it!!!!!!!! Glastonbury my life has changed forever!!!!!! Thank you!!! Pyramid stage! Main Stage!!! Thank you!!'" she tweeted later.

Tickets to the 2013 Glastonbury festival cost £205 each and sold out in a record 100 minutes, despite the festival's reputation for being one of the muddiest and wettest anywhere in the world!

Meanwhile, the Rolling Stones will mark their 50 years together on the Pyramid Stage on Saturday night.

Scroll down for the best pictures of Glastonbury 2013 so far...

Rita Ora performs at the Pyramid stage on the third day of Glastonbury music festival at Worthy Farm in Somerset June 28, 2013.Reuters
Rita Ora performs at the Pyramid stage on the third day of Glastonbury music festival at Worthy Farm in Somerset June 28, 2013.Reuters
Liam Gallagher performs with his band Beady Eye during the Glastonbury music festival at Worthy Farm in Somerset, June 28, 2013.Reuters
Torann Drums perform at Sensation at Glastonbury music festival at Worthy Farm in Somerset, June 29, 2013.Reuters
Lead singer Justin Young from The Vaccines performs on the third day of Glastonbury music festival at Worthy Farm in Somerset, June 28, 2013.Reuters
Singer Michael Campari performs on the Sensation stage on the third day of Glastonbury music festival at Worthy Farm in Somerset, June 28, 2013.Reuters
Rapper Dizzee Rascal performs on the Pyramid Stage on the third day of Glastonbury music festival at Worthy Farm in Somerset, June 28, 2013.Reuters
Danielle and Este Haim from all-sister Californian band Haim perform at the Pyramid stage during the Glastonbury music festival at Worthy Farm in Somerset, June 28, 2013.Reuters
Nile Rodgers (L) performs with his band Chic on the third day of the Glastonbury music festival at Worthy Farm in Somerset June 28, 2013.Reuters
Gary Wright and Jon Williams wear light costumes in Shangri La field at Glastonbury music festival at Worthy Farm in Somerset, June 29, 2013.Reuters
Fans of musician Nile Rodgers walk into Shangri La field at Glastonbury music festival at Worthy Farm in Somerset, June 29, 2013.Reuters
Festival goers cheer as Nile Rodgers and his band Chic perform on the third day of the Glastonbury music festival at Worthy Farm in Somerset June 28, 2013.Reuters
A festival goer poses nude for a portrait in an Arts tent on the Common at Glastonbury music festival at Worthy Farm in Somerset, June 29, 2013.Reuters
The field in front of the Other Stage is covered in litter at the Glastonbury music festival at Worthy Farm in Somerset, June 29, 2013.Reuters