'Greek' alum Amber Stevens expecting first child

May 14 (UPI) -- Greek alum Amber Stevens is going to be a first-time mom.

The 31-year-old actress announced in an Instagram post Sunday on Mother's Day that she's expecting a baby with husband and former Greek co-star Andrew J. West in the fall.

Stevens posted a collage of Instax instant photos. The collage included snapshots of Stevens with West and glimpses of the star's baby bump.

"The best is yet to come! #comingthisfall," she captioned the post.

West shared the same photo and a sweet message Monday on Instagram.

"Happy belated Mother's Day to my absolutely amazing wife! #comingthisfall," the 34-year-old actor wrote.

Stevens and West played love interests Ashleigh and Fisher on Greek, which had a four-season run from 2007 to 2011 on ABC. Stevens discussed her connection with West in an interview prior to their wedding in December 2014.

"We're ready for the next thing," the actress told the Los Angeles Daily News.

"He totally gets what I do for a living and he does it also, so we really have this amazing understanding of the relationship," she added. "We really support each other we have a blast together. He's my best friend -- and my parents like him!"

Stevens is also known for playing Maxine North on The Carmichael Show, while West portrayed Gareth on The Walking Dead and Henry Mills on Once Upon a Time.