To mark baby Khai’s first birthday, her aunt Bella Hadid posted the sweetest message to the little one.

Sharing a series of photos of the baby girl, who is the first child of Gigi Hadid and Zayn Malik, Bella called the one-year-old the “greatest gift” to their family.

“Happy Birthday to the greatest gift our family has ever been blessed with…,” Bella wrote. “I didn’t know my heart could grow this big!

“You make me smile when I’m sad and make me cry of happiness just because ur [sic] alive. I can’t wait to watch you grow into the most perfect specimen of all.”

The supermodel also thanked her big sister and Zayn for giving her her “forever best friend”.

In the Instagram post, Bella shared a variety of photos of Khai from throughout her first year. However, as with all photos of baby Khai, her face was covered, something Gigi has shared her wishes to do until her daughter is of age to make her own decisions when it comes to sharing her identity.

Gigi and Zayn themselves didn’t post anything on Khai’s birthday, but the Hadid parents, Mohamed and Yolanda did, like Bella.

Mohamed shared a few photos from what seemed to be Khai’s birthday party and Yolanda posted some snaps of the baby girl on the farm with her grandmother.

Bella’s link to baby Khai’s name

Khai’s name has a link to her supermodel aunt Bella.

The 24-year-old’s full name is ‘Isabella Khair Hadid’, meaning her middle name is very similar to her niece’s.

Both Khai and Khair appear to link back to their Palestinian heritage as Mohamed Hadid’s mother was called Khairiah.

The property tycoon has previously claimed his late mother descended from royalty. “Her great grandfather was the Prince of Nazareth – King of Galilee in the 18th century Daher Al-Omer The Ruler,” he previously said.

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Images: Bella Hadid Instagram