The supermodel took to Instagram to celebrate the Gossip Girl alum's birthday week, sharing a photo of the duo together along with a sweet message. For those who may not know, the celeb fashionistas have become close pals over the last few years, stepping out to support each other on several occasions.
"It's this Queen's birthday week and I just want to say how grateful and lucky I am to have a friend like you, B," Hadid wrote. "You are a real one and inspire me in so many ways."
She went on to promise, "I will only be able to thank you enough by making you endless oatmeal griddle cakes and training your children to be world class disposable-camera photographers."
"I love you!" Hadid concluded her post. "Wishing you every blessing."