"I have always shared everything with ya'll here on Real Girl's Kitchen," Haylie wrote in the post. "You have been with me through dating, falling in love, getting engaged and now the moment that has changed my life forever! Today we have big, exciting, wonderful, magical, amazing news! Matty and I are expecting a baby girl! 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!"
Haylie also posted the heartwarming announcement photo on Instagram, and captioned the cute pic, "Happiest girl in the world! Finally can let everyone know that Matty @mr_sts and I are expecting! #BabysFirstJordans."
Haylie -- who is best known for her role on 7th Heaven and for playing the popular high school girl Summer Wheatley in Napoleon Dynamite – announced her engagement to Rosenberg on Instagram on April 3, with a pic of the happy couple and the caption: " The future Mrs.Rosenberg #Love."