Congratulations to Haylie Duff and her fiance, Matt Rosenberg. The two are expecting their first child!

The actress and chef announced the exciting news on almost every social media platform, taking to her Real Girl's Kitchen blog to share that the two are having a baby girl!

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

The former '7th Heaven' actress (and sister to Hilary Duff) also took to Instagram last night, sharing a sweet pic of itty bitty Air Jordan sneakers with a very telling caption.

"Happiest girl in the world!" she captioned the adorable photo. "Finally can let everyone know that Matty @mr_sts and I are expecting! #BabysFirstJordans."

Almost immediately after posting her pregnancy announcement, Haylie Instagrammed another joyful photo -- this one of her cute pup snoozing on her growing baby bump.

"So exciting to finally get to share gems like this!" she wrote of the photo, which you can check out below. "Chicken's favorite nap spot."

We couldn't be happier for Haylie and her fiance -- or for soon-to-be Aunt Hilary, who, considering how close she is with her older sis, seems equally as psyched for the little one as Haylie.

"GUYS I'm going 2 be an auntie," she tweeted, with a plethora of heart emojis. "@haylieduff & @matt_sts are going to be the best parents to a sweet baby & luc will have a partner in crime."

We can only imagine the kinds of baby shenanigans that little baby Rosenberg and Hilary's son, Luca, 2, will get into. Congratulations to the happy couple!

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