'Little People, Big World' Star Zach Roloff and Wife Tori Are Expecting First Child

— -- "Little People, Big World" star Zach Roloff and his wife Tori are expecting their first child.

The happy couple made the announcement Monday on Instagram with a picture of the two of them holding sonogram images. At the bottom of the picture are the words, "Coming May 2017."

"Zach and I are SO excited to FINALLY tell you guys the news! Thank you so much already for the love and support we have received! This is going to be one fun adventure! #ZandTpartyofthree," Tori Roloff wrote on her Instagram account.

The couple wed in July 2015 on the family farm before 200 guests. Their wedding was featured on "Little People, Big World," which airs on the TLC network.