"This is both of our third year doing Sports Illustrated, so Swim Week is our anniversary," Hadid explained. "So this is our three-year friendship anniversary!"
Hadid also couldn't help but gush over another one of her famous friends, Taylor Swift, who absolutely killed her opening performance at the GRAMMYs on Monday and went on to win Album of the Year for 1989.
"[I'm] so proud of her and I think it's a really great journey to the end of 1989, and no one deserves it more than her," Hadid said. "She's the most hard-working, business-minded, brilliant, kind person. I'm so happy for her. I wish I could have been there but we were all there in spirit."