They might be super-duper famous, but that doesn't mean that Bella and Gigi Hadid don't get up to regular sibling antics like the rest of us.
Gigi was being interviewed by Nick Grimshaw on BBC Radio 1 when she got a call from a 'fan'.
"This is Emily," an excited, British girl said. "I was just wondering how you got into modeling. I'm such a big fan!"
Gigi replied with: "I actually started when I was really little — Guess Kids — then went back to school, rode my horses, played volleyball, went to university for two years. And then I started modeling in New York."
"Wow!" yelled the fan. "I love you and I'm so excited about the collection and I wanted to tell you that you are a bright shining star, bright, bright. Keep shining, baby."
However Gigi quickly caught on.
"It's my sister! That's what I thought!" she yelled to Bella. "Me and Bella have the exact same voice."
After Bella had been revealed, she let Gigi know that she was only really calling to praise her sis.
"You know what, I'm so proud of you," she said. "She was so excited this morning to come on this show, so I'm so happy you're there, G, I'm so proud of you."
Obsessed with these two.