Haylie Duff Is Pregnant with a Girl

— -- The Duff family is expanding!

Haylie Duff is expecting a baby with her fiancé Matt Rosenberg, she announced on her blog.

"Matty and I are expecting a baby girl! Entering this new chapter of our lives and our relationship has been so special," she wrote. "We are so happy and so in love with her already!!!"

Duff, 29, announced her engagement to Rosenberg this past April. While this is their first child, they have plenty of experience with babies: Duff's younger sister Hilary is the mother of a 2-year-old son, Luca.