Shawn Mendes and Camila Cabello Perform on ELLEN

Shawn Mendes and Camila Cabello performed on ELLEN today, February 16. The duo performed their single, “I Know What You Did Last Summer”.

The single was released this past December and has already been certified Gold in the United States. Shawn and Camila have spent the past two months promoting the new single on a variety of different media outlets and at the iHeartRadio Jingle Ball tour.

How do you think they did on the show?