The festival, which takes place between July 3-6, has confirmed that Rihanna will perform a bonus gig for people who have four-day festival tickets.
The pop superstar, who released her latest album ‘Unapologetic’ in 2012, will perform on July 7.
The festival will be headlined by Queens of The Stone Age, Blur, Kings of Leon and Arctic Monkeys.
Full four-day camping tickets are available now priced £93. For more information visit Opener.pl/en.