Haylie Duff is a mother of two.

The 33-year-old actress and singer introduced daughter Lulu Gray in an Instagram post Thursday after welcoming the infant with fiance Matt Rosenberg.

Duff shared a cute photo of Ryan, her 3-year-old daughter with Rosenberg, holding her baby sister. The toddler wears a princess dress and tiara in the picture.

"She arrived June 5th, and brought all her magic with her! Ryan is the happiest big sister & we are finally a family of 4! Meet our littlest one... Lulu Gray Rosenberg!" Duff captioned the post.

Duff, the elder sister of actress Hilary Duff, had announced her pregnancy in January. She told People in March she was thrilled for Ryan to have a younger sister.

"Truthfully, we really wanted another girl," the star said.

"My sister and I have such a special relationship," she explained. "Ryan could have that bond of sisters. we would have been happy if it was a boy, but we're pretty pumped that it's a girl."

Hilary hosted a dinner for Duff in April ahead of Lulu's birth. The 30-year-old actress said she was "so excited" about her sister's second pregnancy.

Photo credit: Haylie Duff/Instagram