American Music Award for Collaboration of the Year  The American Music Award for Collaboration of the Year has been awarded since 2015. Years reflect the year in which the awards were presented, for works released in the previous year (until 2003 onward when awards were handed out in November of the same year). The all-time winner in this category are Camila Cabello with 3 wins, Cabello and Justin Bieber are also the most nominated artists with 3 nominations.