Shawn Mendes Mashed Up His Hit 'Treat You Better' With Ed Sheeran's 'Castle On The Hill' & It Was Beautiful!

11 June 2017, 14:17 | Updated: 12 June 2017, 12:27

Shawn Mendes treated the #CapitalSTB crowd to a stunning set.

He was one of the most anticipated performers on the line up and Shawn Mendes certainly didn't disappoint when he took to the stage for a stunning set, including a soulful Ed Sheeran mash up. 

The Canadian star has gone from a Vine star to a legit musical superstar - and we saw all the tweets you guys sent us asking for him to be on the line up! Shawn told the crowd, "This is the most insane thing, I've done ever", as he performed for his biggest ever crowd - we like to make dreams come true at the #CapitalSTB!

Shawn brought five of his biggest hits to entertain the crowds - and judging by the screams when he came onto the stage - you guys were SO up for partying with him! He opened with 'There's Nothing Holding' Me Back' and he couldn't wipe the smile off his face to be performing for his UK fans again.

Shawn took the time to surprise a mega fan backstage - talk about the dream scenario... yep, we're jealous! 

Ahead of his turn on the stage, Shawn popped by our backstage tiki bar and played dares... which may have ended up with him having an impromptu haircut! Eek! 

Well, we know you're game for a laugh, Shawn!

Shawn Mendes – Summertime Ball 2017 Setlist

There were a lot of Shawn's fans in the audience who couldn't stop tweeting about how UNBELIEVABLE his performance had been: 

@ShawnMendes is playing infront of Wembley stadium as we speak. Oh my. 80,000 people #CapitalSTB https://t.co/QnzsjD211p

— Catherine (@CathanI2) June 10, 2017

@ShawnMendes is performing right now and I'm in tears... BABY THERES NOTHING HOLDING ME BACK!!! #capitalSTB

— quiana (@quiana__marie) June 10, 2017

IS THE SHAWN MENDES REALLY PLAYING IN FRONT OF 80,000 PEOPLE IN THIS EXACT MOMENT??!???! #CapitalSTB

— christin (@honestshawn) June 10, 2017

Shawn Mendes is something else oh my

— Mia Wright (@mialily_09) June 10, 2017

Let's go man, I'm so proud of youuu @ShawnMendes #CapitalSTB

— Thais (@thaissantiiagoo) June 10, 2017

@ShawnMendes omg this guy is adorable what a voice. So brilliant live #CapitalSummertimeBall

— Mel Everett (@meleverettradio) June 10, 2017

Ruin is such a beautiful, emotional song and it gets even 100x better when performed live, thank you so much for this @ShawnMendes

— Shawn Mendes Updates (@TheShawnUpdates) June 10, 2017 

Five songs is just NOT enough - Shawn left the crowd begging for more and pumped for the rest of the show!