Harry has done the double
The former One Directioner’s new solo album, ‘Harry’s House’, arrives this week
The pair also treated the crowd to a dazzling rendition of disco classic 'I Will Survive' during Styles' second headline set
The former One Direction singer says he prides himself on his accents
"I can assure you he's not got an acoustic guitar out trying to write a middle eight for something"
The former One Direction singer will play alongside Tom Grennan, while Robbie Williams will deliver a special half-time performance
They join the likes of Yungblud, Green Day and Russian rapper Oxxxymiron
It comes after huge demand crashed Ticketmaster's website
The tour - which includes a handful of UK and Ireland dates - will see support from Arlo Parks, Mitski, Wolf Alice and Koffee
The pop star is said to be joining Billie Eilish and Kanye West at the top of the festival bill