Hilary Duff (Michael Kovac/Getty Images for Adopt Together)
Duff, 33, shared a black-and-white photo of her now family of five. In the pic, Duff is sitting in an inflatable bath filled with water, holding the newborn in her arms as she’s surrounded by her other daughter, Banks, 2, son Luca, 9, and husband, Matthew Koma.
Several celebrities reacted to the “Younger” star’s post on Saturday.
“So beautiful! Congratulations!! Ashlee Simpson Ross said.
“Congratulations mama!!!” Sophie Turner wrote.
“Omg how amazing this is! Congratulations,” Jenna Dewan commented.
“Married at First Sight” alum Jamie Otis added: “CONGRATS MAMA! Women are so incredibly strong. You literally just grew the cutest tiny human and birthed it! It will never cease to amaze the power of a woman. Enjoy that precious babe!