The two musicians performed their hit “I Know What You Did Last Summer” for the show.
“Ellen makes makes me extremely nervous. Haha,” Shawn jokingly shared on Twitter just ahead of their appearance, where Shawn also surprised a super fan of his.
Check out both vids below!
Shawn Mendes & Camila Cabello Perform ‘I Know What You Did Last Summer’
Shawn Mendes Surprises a Superfan — EXTENDED