'Duck Dynasty' stars Sadie and Cole Robertson head to prom together

The 'Duck Dynasty' kids are all grown up!

Sadie Robertson and Cole Robertson attended their Senior Prom together on Saturday evening in Monroe, Louisiana and shared all the fun on their Instagram accounts.

Sadie, who looked absolutely gorgeous in a black and white mermaid-style gown, was all smiles as she posed with her cousin, Cole, who wore a black tuxedo. She posted a sweet photo of them together and captioned it, "making mems with the fam is the best, because we can laugh about them forever. thank you for always being there cuz! couldn't do life without you!"

Her mom, Korie Robertson, was equally nostalgic and shared a photo of the family members together. She captioned her photo, "Feels like yesterday that these two were building forts in the yard. Last night was their senior prom 😭@littlecoleofcereal What an awesome man of God you have become. So proud of you, and @legitsadierob I love every single thing about you! You were drop dead gorgeous last night, and your sweet spirit is even more beautiful than what we see on the outside. Your inner beauty shines through😍 #proudmom#strongandkindkids."

Cole also shared a photo of their big night and joked, "I mean who wouldn't have fun this date? Had a blast with you cuz we should do this more often."