The Chained To The Rhythm singer – who parodied Theresa May and Donald Trump at the BRIT Awards – is the latest headliner to be unveiled for the annual bash, which moves to a different location every year.
She joins acts such as Little Mix, Kings of Leon and Stormzy on the ever-growing bill, with the shows taking place on Saturday and Sunday, May 27 and 28.
So how do fans get hold of tickets?
A degree of preference is given every year to those who live in the local area.
50,000 tickets will be given away across the two dates, although actual ticket info will not be published until late March or early April – so fans will have to sit tight for the time being.
Demand will, however, massively exceed supply, and it is expected that tickets will not be available for very long at all.
They are all free, although a non-refundable charge of £8.50 per ticket will be applicable.
There are no registration processes in place, and there is no minimum age – fans just have to be accompanied by an adult if younger than 16.
Last year’s event was headlined by Mumford and Sons and Coldplay, and was held near Exeter.
However there was controversy when Twenty One Pilots had their set cut short due to “safety concerns”.
Norwich, Glasgow and Derry have also played host to the festival in recent years.
Yesterday it was reported that Perry is among the bookies’ tips to be a James Bond star.