VIDEO : Justin Timberlake & Anna Kendrick Perform Duet For First Time @ Cannes

Justin Timberlake and Anna Kendrick star in the upcoming animated movie, "Trolls." They also sing the song "True Colors" that is featured in the film. In an interview during the "Trolls" press tour, Kendrick told the Hollywood Reporter that she and Timberlake had actually never sung the duet together before the Cannes Film Festival. Kendrick said "When I sang my side of 'True Colors,' Justin had recorded his part already." Timberlake explained that the producer pitched the idea of them singing it live at Cannes very nonchalantly. Timberlake recalled that the producer said "Justin, just bring your guitar, and then you guys just do the song."