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 star made his debut at the California festival last week
Catch up with all the live and backstage action from the festival's big return
The singer will play five stadium shows in the region in February and March next year
US music fans were not ready to let this moment of freedom pass by quietly
In his debut performance at the Californian festival, the British star previewed his new album alongside some big surprises
The pair played 'Man! I Feel Like a Woman!' and 'You're Still The One'
While the duo are listed in liner notes for the song, they are not officially named as a feature artist or tagged on the track on streaming services
All the new bangers added to the NME Radio playlist this week
It's the longest it's ever taken in a new year for the number one on the chart to be a new song