Duck Dynasty’s John Luke Robertson, Mary Kate Robertson Expecting Twins

The Robertson dynasty continues to grow.

Duck Dynasty stars John Luke Robertson and Mary Kate Robertson—who share John, 5, Ella, 4, and Wells, 2—announced that they’re expecting twins.

“Absolutely thrilled to tell y’all we are welcoming TWINS to our family early next year!!!” the couple—who got married in 2015—captioned a joint Instagram post shared Oct. 4. “The most wonderful, crazy surprise blessing of our lives ha!”

And as they revealed, their family is set to welcome “two new little Robertson girls!”

Mary Kate, 29, and John Luke, also 29—the oldest son of Willie Robertson and Korie Robertson—included a sepia-toned family photo on the beach with their announcement in which they’re posed with their three kids while Mary Kate cradles her baby bump in a plaid dress, and their oldest son John holds a strip of sonogram photos.

The reality stars’ family didn’t hold back their excitement in the comment section, with Korie writing, “Soooo excited … so much love!! You are going to be the best twin mom!”