PHOTOS: Bradley Cooper photobombs Brad Pitt and more starry moments from Glastonbury Festival 2017

Celebrities have always flocked to famed festival Glastonbury to watch the world’s best bands, but this year A-listers truly came out to play. Festival-goers must have been thrilled to spot stars like Brad Pitt, Johnny Depp, Bradley Cooper and David Beckham hanging out at the event, which spanned from June 21 - June 25 at Worthy Farm in the UK. Famous folks were seen enjoying the numerous performances (from talent like Katy Perry), with Bradley even taking to the stage himself! Check out all the celebrity highlights from Glastonbury Festival 2017.

Photo: Instagram/@glastofest

Two for one! Musician Chris Simmons shared a selfie with him and Pitt to his Instagram. Despite the snap being a bit blurry, it's clear as day that Chris and Brad got photobombed by Bradley Cooper.

“When you get your photo with Brad Pitt photobombed by Bradley Cooper!” Chris wrote along with the pic.

Photo: Instagram/@iamchrissimmons

It seems Brad was all about posing for pics that day, taking another with British band Royal Blood. The duo joked that the acclaimed actor was a fan who had won a competition to meet them. They posted the picture on their Instagram page, with the caption: "Congratulations to our competition winner — William Bradley Pitt.”

Photo: Instagram/@royalblooduk

Royal Blood also got love from fashion designer Stella McCartney, who had a great spot watching them perform from backstage. 

Photo: Harry Durrant/Getty Images

Stella tweeted out a fun pic of her backstage with Katy Perry, writing: "Glasto gals.... I am the one in the yellow fur free fur! x Stella."

Photo: Twitter/@StellaMcCartney

Eye spy! Katy Perry knocked out a crowd of 100,000 plus people, when she performed her hits at the historic festival. The superstar, who wore a sparkly ensemble, was beyond thrilled to be there, taking to Instagram to share her elation with an awesome video of her crowd surfing. She captioned it:

"Sitting here, enjoying some fries in disbelief that I just played a show to about 100,000 people at @glastofest that voluntarily showed up to see me... (look mom I made it!) I had so much fun and as you can see gave you all of me, literally. I can't wait to do it over and over again on Witness the tour... 👁❤️😩 Thanks to @glastofest for helping me feel like, cool or whatever."

Photo: Instagram/@katyperry

A-list buddies Cara Delevingne and Margot Robbie enjoyed a day of fun together. The Suicide Squad co-stars both looked stylish in shades and white T's.

Photo: David M Benett/Getty Images

Surprise! Bradley Cooper wowed festival attendees when he opened Kris Kristofferson's set by shooting scenes for his highly anticipated A Star Is Born remake. Coops is directing and starring in the film alongside powerhouse Lady Gaga. The pair did something similar at Coachella, taking advantage of the sea of concertgoers to shoot their scenes. Kris surely welcomed the action, having starred in the 1976 film with Barbara Streisand.

Photo: Shirlaine Forrest/WireImage

Lorde put on quite the show at Glastonbury, opening her set from inside of a see-through plastic box.

Photo: Shirlaine Forrest/WireImage

David Beckham and his son Brooklyn also made an appearance at this year’s Glastonbury to help open a set of homes in Pilton with festival founder Michael Eavis. The homes will offer more affordable housing in the local area. David and Brooklyn were later photographed enjoying Liam Gallagher’s performance as they partied with fellow stars.

Photo: Getty Images

Sporting her fresh buzz cut, model-actress Cara Delevingne looked chic on the first day.

Photo: David M Benett/Getty Images

Johnny Depp helped kick off day one of Glastonbury by introducing his film The Libertine. The star stuck around to enjoy other days of the festival as well.

Photo: Ki Price/Getty Images