'Blacklist' star Megan Boone welcomes a baby daughter Caroline Boone Estabrook

Megan Boone, whose pregnancy became a major plot point during this most recent season of her show "The Blacklist," gave birth to her first child, a girl, on April 15.

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Megan Boone in 2015.

Boone and fiancé Dan Estabrook shared the good news about Caroline Boone Estabrook on Instagram on Monday.

Home, blessed by the birth of our daughter, Caroline Boone Estabrook 5:33am on April 15, 2016 Love, Megan + Dan

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She'd previously posted a picture of this adorable onesie (and hat!) from her show's props department:

She'll be a hit at the office. Thanks Nikki, TBL props dept.

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Boone's character, FBI consultant Elizabeth Keen, was also pregnant on "The Blacklist" and gave birth in a recent episode, only to face sudden health issues that turned dire quickly.

We're quite sure, however, that the real-life parents are happy and healthy. Boone revealed the news that her baby would be a girl and that she was engaged to Estabrook on "Live! With Kelly and Michael" last November.

In the garden #whenwewereyoung #nofilter

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"We definitely were in it for the long haul when we made a human," she said, according to E! News.

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