Luke Bryan and his wife Caroline went a little nuts this Halloween — literally. Caroline shared a series of photos that show her in a squirrel costume with Bryan as her nut, in an acorn costume.

Caroline went all out, dressing head-to-toe as a squirrel, complete with a giant tail, furry face mask and buck teeth. Bryan rocked his getup, too, in a furry yellow and brown acorn. One picture shows Caroline putting her husband in a headlock, while another finds her carrying an armload of wine to their undisclosed festivities. A slow-motion video features her pouncing on Bryan, landing on him in piggy-back mode.

The couple clearly had a ball with their friends — one of whom was dressed in an inflatable unicorn costume, while another wore a giant Vhana Douya Vodka bottle.

In the days leading up to the spooky holiday, Bryan and his fellow American Idol judges Katy Perry and Lionel Richie visited Live With Kelly and Ryan dressed in inflatable animal costumes.

Bryan and Caroline often have unique ideas for Halloween costumes, once poking fun at Blake Shelton's Sexiest Man Alive title, with Caroline playing his Gwen Stefani. The "What Makes You Country" star is slated to return to the judging panel when the second season of the Idol reboot premieres in 2019.

Remember Luke and Caroline's Other Epic Costume? It's Here: