Shawn Mendes Ready for People's Choice Performance: 'Gunna Be Unreal'

Shawn Mendes arrives ready to perform at the 2016 People’s Choice Awards held at the Microsoft Theater on Wednesday (January 6) in Los Angeles.

The 17-year-old singer will perform his duet “I Know What You Did Last Summer” with his collaborator and rumored girlfriend 18-year-old Camila Cabello from Fifth Harmony.

PHOTOS: Check out the latest pics of Shawn Mendes

Shawn shared his excitement for the performance yesterday when he tweeted, “Tomorrow is gunna be unreal.” He carried the excitement right through the red carpet when he posted an Instagram photo of himself with a huge grin just before the event, captioned, “This is how happy i am right now HAHAH.”

FYI: Shawn is wearing John Varvatos.

10+ pics inside of Shawn Mendes arriving at the 2016 People’s Choice Awards in Los Angeles…