The entrepreneur and CEO of Meta took to his Instagram on Friday afternoon and announced the birth of his third daughter.

“Welcome to the world, Aurelia Chan Zuckerberg! You’re such a little blessing,” he captioned a sweet photo of himself looking at his adorable newborn baby girl.

The post also included a second photo of Priscilla cradling their daughter as she peacefully lay on her chest.

The couple also shares two children together, both girls – Maxima Chan Zuckerberg, 7, and August Chan Zuckerberg, 5.

The Facebook founder met the love of his life at a college party while he was waiting outside a bathroom. After falling in love with Priscilla, Zuckerberg moved in with her in 2010 and later tied the knot in a super private wedding ceremony.

“It was really cute. Naturally, people were surprised but happy,” a guest told PEOPLE about the wedding ceremony.

“He was this nerdy guy who was just a little bit out there. I remember he had these beer glasses that said ‘pound include beer dot H.’ It’s a tag for C++. It’s like college humor but with a nerdy, computer-science appeal,” Priscilla told The New Yorker in 2010.

“She just treats him like the guy she’s in love with, not the same Mark Zuckerberg everyone else fell in love with,” David Kirkpatrick told the New York Times in 2012.

The couple welcomed their first daughter in December 2015 and the second in March 2017.

Last year, in September, Mark announced that Chan was pregnant with their third child.

“Lots of love. Happy to share that Max and August are getting a new baby sister next year!” he wrote on Instagram.