Shawn Mendes & Fifth Harmony's Camila Cabello Duet On 'Fallon': Watch
By now you're probably totally obsessed with "I Know What You Did Last Summer," the dramatic duet between teen dreams Shawn Mendes and Fifth Harmony cutie Camila Cabello. The dynamic duo really knows how to deliver a tune both on screen and on record...it's no wonder it's a hit these days.
We've seen them do it on Kelly & Michael, we've seen them do it on The Late Late Show. And as of last night, we've seen 'em do it on The Tonight Show Starring Jimmy Fallon.
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