Gigi Hadid and mom Yolanda enjoy outing in New York City

Hadid also shared a photo of the pair which showed Malik smoking a cigarette and Hadid wearing unicorn slippers.

The photos come a day after Gigi shared photos from inside the birthday bash to reveal the theme of the party and the arrangements made for her beau.

Gigi Hadid threw boyfriend Zayn Malik a game-themed, quarantine-friendly birthday party on January 12. "Team No Sleep! Happiest birthday to our Zaddy baba", she wrote. So special. Love you long time, thank you for makin me a mamma to the best girl ever.

The new parents both announced her arrival on social media in September, writing heartfelt posts about their first child.

Gigi Hadid stepped out for a chilly stroll with her three-month-old daughter on Tuesday. The second photo is a cartoon illustration of Malik holding his daughter.

He wrote: 'Our baby girl is here, healthy & lovely 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.

And the former One Direction star took to Twitter to say his newborn daughter is "healthy and beautiful", and he feels "proud" to call her his child. Meanwhile, Hadid wrote in her own post, "Our girl joined us earth-side this weekend and she's already changed our world. So in love", she wrote in the caption.