It's official: Mary Kate McEacharn is now part of the Robertson family of "Duck Dynasty!"

She and John Luke, the "beardless" Robertson son, have just tied the knot in a simple ceremony held in the Robertson family's farm in West Monroe, Louisiana.

The blushing bride shared a photo of her and John Luke as the latest Mr. and Mrs. Robertson on her Instagram account (@marykaterob), and she wrote: "Well....WE GOT MARRIED! Thank you to everyone for the love and support and thank you to God for the absolutely perfect weather. Love my new husband and love being Mrs. Mary Kate Robertson. Let the adventure begin."

Her mother-in-law Korie, on the other hand, shared a candid photo of the happy couple on her Instagram account (@bosshogswife). She congratulated the two and wrote, "Last night these two tied the knot, and we CELEBRATED!! So. Much. Love. Between them. Surrounding them. Showered on them. @young_and_beardless and@marykaterob began a beautiful adventure full of fun, laughter, good times and some bad. Assuredly God is with them every step of the way and there's a host of family and friends who always have their back!!"

For his part, John Luke told Us Weekly that he had "an amazing time."

His wife added: "It was one of the best days of my life! It was everything I hoped it would be and more."

According to their wedding planner, Erin Vowell, they had a local band play the acoustic version of The Beatles' "Here Comes the Sun" during the reception, and they also played "Sweet Caroline," "Amazing Grace," and "Stand By Me."

For their reception meal, guests were treated to grilled chicken skewers with vegetables, mini tacos and hamburgers, barbecue shrimp, and brisket sliders.

John Luke's dad Willie officiated the wedding. He surprised the couple by having a mariachi band perform before the ceremony.