So it's hard to believe that she once battled with her own self-confidence issues. But, in her latest video for her YouTube channel, Klossy, she shared some photos of her teenage self.
And while Kloss describes the photos as "tall, skinny, awkward and gangly", we would say they're more picture-perfect future model material.
"I wasn't confident," Kloss said. "I was always very shy. I was always very open with my friends and family but when it came to getting in front of a crowd I was very conscious and I would go into a shell and be very quiet."
She reveals that ballet helped her to overcome her anxieties.
If you need us, you'll find us dusting off our ballet shoes...