While Hart of Dixie star Rachel Bilson is ready to pop and has been toting her baby bump around Los Angeles, a spoiler alert has given fans more details about the woman who will give her character, Zoe Hart, a little competition on The CW show.

Rachel Bilson Flaunts Baby Bump in L.A., Jaime King Dishes About Son's First Birthday Party

Fans get ready for another semi reunion of The O.C. cast! Autumn Reeser, who played on the series with Bilson, announced via her WhoSay page Tuesday that she snagged the role of the mystery woman, Olivia Green.

She shared a snapshot with both ladies holding their waist with Bilson's evident baby bump on display and smiling at each other.

Rachel Bilson Shows Off Baby Bump On Set Of 'Hart Of Dixie'

She wrote, "Love this girl, such a pleasure to work w/ her again!! A mini #OC reunion..."

Zoe is used to being the big fish in a little pond as she trekked her way from New York City to Bluebell, Ala. in attempt to take over her late father's medical practice. Now, another woman is slated to come and shake things up in the upcoming and highly anticipated fourth season. She is also from The Big Apple but will be practicing law instead of medicine.

But Zoe will be able to reign a little longer as Reeser's character is not set to make her appearance on the reunion until the season finale. TVLine also confirmed that Reeser will be playing Green.

The site first broke news of the new woman joining the cast on September 15.

It described Green as "a very attractive, fashionable, quick-witted, New York attorney struggling to make sense of life in the quaint Alabama burg."

Hart of Dixie is slated to return to The CW in early 2015.

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Hart of dixie, Television, The cw