Gigi Hadid and Zayn Malik are reportedly expecting a baby girl

Gigi Hadid and Zayn Malik are reportedly expecting a daughter!

A family source told TMZ that the couple have been informed they're having a baby girl.

According to reports, Hadid is roughly 20 weeks along in the pregnancy; women who are pregnant can usually find out the sex between 16 and 20 weeks.

READ MORE: Gigi Hadid and Zayn Malik's complete relationship timeline

News of Hadid's pregnancy was first reported on April 28. The model and former One Direction singer have not publicly commented on their pregnancy and fans think they may have held a gender reveal party on Hadid's 25th birthday celebration due to blue and pink ribbons attached to the balloons, but this is also unconfirmed.

The couple marked the milestone occasion with the Hadid family at their Pennsylvania farmhouse over the weekend.

READ MORE: Yolanda, Bella and Gigi Hadid pay tribute to 'Oma'

"Had the sweetest day celebrating my 25th birthday with my quarantine family, who made it so special for me, along with all the love I felt from all over the world!" Hadid wrote alongside a series of photos.

"Thank you to everyone for the birthday messages, I carried you with me yesterday!!gi I am grateful and lucky that my family and friends — near and far — are healthy and safe, and although I missed loved ones I wish I could have celebrated with, know that these times will make us even more grateful for togetherness to be had in the future ! I will never forget my 25th bday!"

Gigi Hadid's mother Yolanda Foster has also confirmed the news of her daughter's pregnancy in an interview with Dutch radio outlet RTL Boulevard.

Foster admitted that she is "still shocked" by the news, but "can't wait to be a grandmother."

"It is quite special, since I lost my own mother so recently. That is the beauty of life: one soul is leaving us and another is coming. We feel very blessed," she said.

The baby will be the first grandchild for the 56-year-old.