Model Gigi's mother, Yolanda Hadid, shared their photo on Instagram on Friday, usmagazine.com.
"Eid Mubarak to everyone celebrating," she captioned the photo in which they are huddled together.
The "Pillowtalk" singer, 24, beamed in a T-shirt alongside his mother, Trisha Malik, who also shared the photo on her own Instagram account, writing, "Eid Mubarak to everyone... Blessed Day."
The Victoria's Secret model's father, Mohamed, was born in Palestine and migrated to the US when he was a teenager.
The "I don't wanna live forever" singer was born in England to a British mother and British Pakistani father.