Emilie de Ravin is going to be a mom of two.

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The 36-year-old Australian actress said in an Instagram post Friday that she's expecting a baby boy with fiance Eric Bilitch in the fall.

De Ravin is already parent to 2-year-old daughter Vera Audrey with Bilitch. She announced her pregnancy by posting a photo of herself holding up a positive pregnancy test.

"Coming this fall...Baby boy makes 4! Eric & I could not be more excited to share our happy news with y'all & Vera is over the moon about becoming a big sister!" @ericbilitch," the star captioned the picture.

Bilitch, a writer and director, shared the same snapshot on his own account.

"Baby Boy de Ravin-Bilitch coming soon!!" he wrote.

De Ravin got engaged to Bilitch in July 2016 following Vera's birth. She dedicated a sweet post to Vera on her second birthday in March.

"Happy 2nd Birthday Vera! You're such an incredible, beautiful little person & the brightest of lights! Your smile constantly melts my heart," the star wrote.

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"I'm so lucky to be your Mum & I learn so much from you every single day. I love you more than words can ever say...always & forever xoxo #tothemoonandback #mylittleangel #oldsoul"

De Ravin is known for playing Claire Littleton on "Lost" and Belle on "Once Upon a Time."

Photo credit: Emilie de Ravin/Instagram