Gigi Hadid Wishes Boyfriend Zayn Malik a Happy Birthday: 'Love You Long Time'

Katie Campione

Gigi Hadid/instagram

Zayn Malik is ringing in his 28th year with his family by his side!

Gigi Hadid, Malik's girlfriend and the mother of his 3-month-old daughter, wished him a happy birthday on Instagram Tuesday, thanking him for making her a mom "to the best girl ever."

"Team No Sleep ! Happiest birthday to our Zaddy baba. So special. Love you long time, thank you for makin me a mamma to the best girl ever ☺️ Wish you the best every single day," she wrote in the caption.

Sharing a rare glimpse into their new life as parents, Hadid's post shows Malik wearing orange overalls, boots and a beige hate while Hadid wears a black robe, a fuzzy hat and some unicorn slippers.

Hadid's post also includes a sweet cartoon illustration of a smiling Malik holding his daughter.

RELATED: Gigi Hadid Shares Adorable Photo of 3-Month-Old Daughter Holding Her Finger: 'My Girl'

A week before celebrating Malik's birthday, Hadid, 25, shared a sweet photo of her baby girl holding her finger, writing in the caption, "my girl !"

In the precious picture, the newborn can be seen wrapping her tiny hand around Hadid's pinky.

The new parents both announced her arrival on social media in September, writing heartfelt posts about their first child. So far, they've kept her name private.

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"Our baby girl is here, healthy & beautiful," Malik tweeted on Sept. 23 alongside a photo of the baby holding onto his finger. "to try put into words how i am feeling right now would be an impossible task."

"The love i feel for this tiny human is beyond my understanding. Grateful to know her, proud to call her mine, & thankful for the life we will have together x," the former One Direction member added at the time.

Hadid followed suit on Instagram, sharing another photo of Malik's hand resting on their daughter's blanket. "Our girl joined us earth-side this weekend and she's already changed our world. So in love🥺💕," she wrote in the caption.