Fourth addition to the family for Hilary Duff: The 36-year-old US actress and her husband, songwriter Matthew Koma, have announced the arrival of daughter Townes Meadow Bair.

On Instagram, Duff posted several black-and-white photos of the baby, born May 3, who was delivered via water birth. “Getting to know you, staring at you and smelling you are pure moments of magic,” she wrote.

Instagram post by Hilary Duff

Duff ("Cheaper by the Dozen", "Lizzie McGuire") and Koma (36) already have two daughters together, aged five and three. Duff also has a twelve-year-old son from her first marriage to hockey professional Mike Comrie.

Duff, who was in front of the camera as a child, most recently starred in the series "How I Met Your Father", a spin-off of the cult sitcom "How I Met Your Mother". As a singer, she has also recorded several pop albums.