Bradley Cooper and Johnny Depp gatecrash Kris Kristofferson's Glastonbury set

Bradley Cooper added a little movie star power to the festivities at Glastonbury on Friday (23Jun17) as he and Johnny Depp gatecrashed Kris Kristofferson's afternoon set.

Cooper was filming footage for his Star is Born remake and hit the festival's Pyramid Stage much to the delight of surprised fans to introduce the country singer, who starred in the 1976 version of the movie.

Depp joined in the fun during Kristofferson's set when he made an appearance to perform Sunday Morning Coming Down with the veteran.

"What an honor to be on the same stage as you," the country star said as he introduced the movie star to the stage.

Depp's stage appearance came hours after the actor made headlines by joking "maybe it’s time" that an actor assassinated the President of the United States, while introducing a screening of his movie The Libertine at the festival.

Meanwhile, Brad Pitt was also spotted at Glastonbury 2017 checking out Kristofferson's set from the side of the Pyramid Stage.

Radiohead will headline the Pyramid Stage on Friday night, while Foo Fighters and Ed Sheeran are billed to wrap up the festivities on Saturday and Sunday, respectively.