'Little People, Big World' Stars Jeremy and Audrey Roloff Expecting First Child

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The couple learned they were pregnant the same night they attended Jeremy's twin brother, Jack's, gender reveal party on Jan. 7.

Jack and his wife Tori are expecting a boy.

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"I was so surprised," Audrey told Us Weekly of taking the pregnancy test that night. "It didn't hit me until I heard the heartbeat at our first doctor's appointment."

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The couple wed in September 2014.

They are looking forward to the beginning of what they hope will be a big family!

"We want at least four," Audrey shared.

Jeremy added, "We love the idea of a big family!"