'The Walking Dead' Alum Steven Yeun and Wife Joana Pak Welcome a Daughter

Joana Pak first revealed she was expecting in December with a bathroom-mirror selfie, pulling up her shirt to reveal her baby bump

Steven Yeun and wife Joana Pak are now a family of four!

The Walking Dead star, 35, and his photographer love, 32, have welcomed a baby girl.

On Tuesday, Pak shared a sweet snapshot of herself lying in a hospital bed with the tiny newborn nuzzled on her chest.

She then shared another photo, but this time of just the baby lying face up surrounded by blankets. The little bundle of joy was dressed in a white onesie and a hospital bonnet.

Yeun has yet to publicly announce the baby's birth on social media. The infant's name and birthdate have also not yet been revealed.

Joana Pak. Joana Pak/Instagram

A rep for Yeun did not immediately respond to PEOPLE's request for comment.

The new baby joins the couple's son Jude Malcolm, whom they welcomed on St. Patrick's Day 2017.

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Joana Pak/Instagram

Pak first revealed she was expecting on Instagram in December with a bathroom-mirror selfie, pulling up her long-sleeved brown shirt to reveal her belly and captioning it with a series of family-themed emojis.

Vincent Sandoval/Getty

Numerous members of Yeun's former Walking Dead family congratulated the couple on their impending bundle of joy.

"Yay! So cute!" wrote showrunner Angela Kang, while star Norman Reedus (a new dad himself!) showed his support by commenting with four red heart emojis.

RELATED GALLERY: See Photos from Walking Dead Star Steven Yeun's Ethereal, Yet Traditional, Hilltop Wedding

Yeun and Pak tied the knot in December 2016 after seven years together, celebrating during a romantic affair as the two were surrounded by ethereal flowers and butterfly-embellished china in a hilltop wedding at Los Angeles' Paramour estate.

With 220 guests in attendance — including Walking Dead costars Reedus, Andrew Lincoln, Melissa McBride, Chandler Riggs and Sarah Wayne Callies, among others — the couple mixed together elements of their heritage with their quirky tastes.

RELATED VIDEO: The Walking Dead Star Steven Yeun Marries Longtime Girlfriend, Joana Pak

In order to keep the ceremony "very relaxed and focused on a greater message of love," Yeun told Martha Stewart Weddings that they didn't focus too much on religion.

Yeun and Pak regularly share glimpses into life with their first son on social media, from trips to the park to teeth-brushing escapades and more.

In early March, the new mother of two shared a throwback photo of herself pregnant with Jude and revealed that she and Yeun were expecting a daughter this time around.

"There was a period of time after becoming pregnant with Jude where I stayed quiet. It was just me, myself, and I processing an abundance of changes that kept me. Questions of postpartum and the wonders of motherhood became monotonous and I felt dissociated with myself. My transformation happened this way," she wrote.

"It has been 2 years since this photo was taken, and I am so grateful to find myself carrying a baby girl," Pak continued. "As I remember my mama's words 생각에 달려 있어. I lay myself down and surrender. I know that I know nothing."