Duck Dynasty star Rebecca Robertson Loflin and John Reed Loflin are expecting ...

Rebecca Robertson Loflin is pregnant with her second child.

The 32-year-old Duck Dynasty star revealed on Instagram that she and her husband are expecting a baby, who is due on Christmas Day.

'Here comes the sun ☀️ so excited to announce our rainbow baby is due in December ( to be exact, the due date is actually Christmas Day,' Rebecca wrote in the caption of the post that she shared on Tuesday.

She continued, 'It's been a very humbling journey for us since last October & a rollercoaster ride the past couple of weeks ( will share more on that later ) but through every obstacles we continue to see God's goodness through our little growing miracle! 

'P.S. Thanks everyone who has sent us love, prayers & encouragements along the way. It really means the world to us.'

On his Instagram page, John posted additional announcement photos and wrote, 'What's that? Newest Loflin addition due December 25th? Blessed and Excited!' 

'Still can't believe it,' Rebecca commented, adding several smiley faces with heart eyes emojis.   

Rebecca and John are already parents to Zane Israel, age two. In her post, Loflin shared three photos of the family celebrating the happy news.

In the first shot, Rebecca, John and Zane were seen beaming with excitement as they posed on a wooden staircase. 

Zane was wearing a beige and white t-shirt with the lettering, 'Big Brother.' The second photo featured Rebecca and John smiling joyfully as John held up a strip of sonogram photos.

Rebecca, who was clad in a green and white floral jumpsuit, rested her hands on her baby bump.

The third image captured Zane looking thrilled to become a big brother as he walked down a wooded trail with his pa trailing behind him.

The Robertson family hosted Loflin when she was a 16-year old Taiwanese exchange student and later legally adopted her. 

And her family was quick to congratulate her. Rebecca's

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