Camila Cabello Says She & Shawn Mendes 'Will Walk Onstage in Our Underwear' if They Win a Grammy

Shawn Mendes and Camila Cabello
Kevin Mazur/WireImage

Shawn Mendes and Camila Cabello backstage during the 2019 MTV Video Music Awards at Prudential Center on Aug. 26, 2019 in Newark, N.J.

Camila Cabello and Shawn Mendes know what you did last summer, and the pair certainly know what Twenty One Pilots did three Grammy Awards ago -- and they want to repeat that iconic moment.

Cabello spoke with on Wednesday (Jan. 22) about what kind of epic acceptance move the duo would make if they win the award for best pop duo/group performance for their No. 1 Hot 100 hit "Señorita." "If Shawn and I win the Grammy, we will walk onstage in our underwear like Twenty One Pilots did. That's a promise," she initially vowed. "Just kidding. It's not. I gotta work out before I do that."

Back in 2017, the pop-punk duo of Josh Dun and Tyler Joseph walked onstage to accept the very Grammy that Cabello and Mendes are up for, except they won for their No. 2 Hot 100 smash "Stressed Out." 

Earlier in the interview, Cabello talked about how "special" it feels to be nominated with her boyfriend in the first place. "It feels really special to get to share that kind of experience with someone that is first and foremost my friend that I've known for such a long time," she said. "He was actually the first person, I think, that I wrote a song with, which was when we did our collaboration 'I Know What You Did Last Summer.' And just kind of like flashing back to then, when we were just two kids in a dressing room... like writing a song really quickly and just being so excited about that to being excited about this song. And we've grown up so much, and getting to experience something so prestigious with him is really cool."

Watch Cabello talk about her and Mendes' Grammy nomination below.