On the new Billboard Pop Shop Podcast, Katie & Keith are breaking down the film's new trailer & the history of accolades surrounding the project.
The news comes a day after the star teased "something exciting" on social media.
The alternate title for the studio set is referenced in album cut "Americana."
Rob Grant's debut album is out on June 9.
Lisa's bandmate Jennie, who V is rumored to be dating, made her Cannes debut earlier in the evening.
The trio last publicly performed together at Queen Bey's headlining Coachella set in 2018.
Jonas infamously broke up with Swift over the phone when she was 18.
Here are all the musicians who attended premieres at Cannes Film Festival this year.
"You should go and find the people that do align with what you really believe in," she shared.