'Little People, Big World' stars Zach & Tori Roloff expecting first baby -- see their announcement!

Zach and Tori Roloff are ready for baby!

The Little People, Big World stars shared their exciting baby news on Instagram on Monday.

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"Guess what... Zach and I are SO excited to FINALLY tell you guys the news!" Tori wrote alongside a photo of the couple holding up ultrasound photos.

"Thank you so much already for the love and support we have received!" the momma-to-be continued. "This is going to be one fun adventure! #ZandTpartyofthree"

The pair, who will welcome their first child next spring, also shared news of the pregnancy in a video for TLC, the network that airs their show.

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Zach, who has dwarfism, revealed how he found out the news that he was going to become a father.

"I walked into the house and she had written it on a notepad that she was practicing her calligraphy, so I was reading through this," he recalls in the video. "On the last page, she wrote, 'You're going to be a dad!' and I skipped right over it. Then she said, 'Wait, hey, you missed it!' Then she pulled it back and I read it. It was super cool."

Zach and Tori Roloff
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Zach and Tori Roloff
My boys and pumpkins. 💛🎃🍂🍁🍃 Life is good! Come say hi to us before this wind blows us away! #rolofffarms #storyofzachandtori #inspectorsullivan
It's the best 1920s we could be with a day's notice! Happy birthday @jamesmichaels !! 🎉🎉 #storyofzachandtori
One year ago today I walked down the aisle to the man of my dreams. This past year has been the best year of my life and I constantly have to pinch myself just to remind myself it's real life. It's been the best year of my life babe and I can't wait to have many more adventures with you! I love you. Today. Tomorrow. Always. Happy anniversary Zachys. 🙌🏼💕 #storyofzachandtori #letsholdhandsuntilwere82 ❤️
✌🏼️ out SB! On to Huntington for the day! #storyofzachandtori
Oregon beaches. There is nothing like them! 🙌🏼 still have 4 hours ahead of us today, but we keep getting sidetracked by the beauty of the coast! #storyofzachandtori #inspectorsullivan #thisishowaroadtripshouldbe #wellsleepwhenweredead!
This girl though!🙌🏼 doing such wonderful things for people of all different shapes and sizes. It was such a pleasure meeting you @whitneywaythore ! Keep doin' you girl. #tlcblockparty #storyofzachandtori #NOBS
Had a fun filled weekend of camping with the family! Day three of no shower... I can't say I'm proud of it. #storyofzachandtori #inspectorsullivan
Reliving this day is not a bad way to spend my Tuesday night! Hope you will tune in to #LPBW tonight on @tlc at 10/9c #storyofzachandtori
We met at a pumpkin patch. We became best friends from the start, because of his ability to make me feel like I could be myself no matter what. He is my forever Valentine. Today. Tomorrow. Always. I love you Zach. #3sentencelovestory #beating50percent @beating50 #storyofzachandtori #happyvalentinesday

"Super curious to know if it's gonna be a dwarf baby or not," added Zach. "[Whether he/she will] come out with some sort of dwarfism. That would be a super emotional time for me."

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Tori shared that her pregnancy cravings have revolved around gummy bears, but that she's balancing out the candy by eating a ton of apples.

The couple tied the knot in Portland, Oregon, in July last year and can't wait to start their new family together.

"We're gonna be great parents," said Tori, in the video. "I can't wait."

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