Announcing the birth on Twitter, Malik, 27, shared a black-and-white picture of the baby girl’s tiny hand clutching his finger.
He wrote alongside the image: “The love I feel for this tiny human is beyond my understanding.”
Hadid, 25, confirmed she was expecting in April while appearing on the Tonight Show Starring Jimmy Fallon.
Zayn Malik and Gigi Hadid welcome baby girl
Gigi Hadid, Zayn Malik Welcome Baby Girl. The First Pages From Their Parent Diaries
Zayn Malik, Gigi Hadid welcome first child together; singer says love for daughter beyond his understanding
Gigi Hadid and Zayn Malik welcome their 1st child together
Gigi Hadid and Zayn Malik welcome daughter