TEEN Mom: The Next Chapter star Kayla Sessler has revealed she's pregnant again.

Reality TV star Kayla announced the surprise news that she's set to welcome her second child with on-again off-again boyfriend Ryan Leigh.

In the sweet video shared on social media , the former Teen Mom: Young and Pregnant star told fans: "Our final addition," alongside a white heart emoji.

The sentimental footage shows Kayla, Ryan and the family dressed in matching all-white outfits.

Set to touching music, the expectant mum can be seen cradling her blossoming bump in the wedding-inspired water shoot.

The 26-year-old MTV star can then be seen revealing her ultrasound scan pictures to Ryan - who then gives her a kiss on the cheek.

Kayla and Ryan - who have reunited after a split - are set to

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