Good buddies Luke Bryan and Blake Shelton (who are now also reality-show rivals) are known for goofing on each other whenever they get the chance—so, when Shelton was scheduled for a headlining set at Bryan's annual Crash My Playa concert festival, Bryan wasn't going to let a golden opportunity pass him by.

He rose to the occasion by dressing up as old-school Blake, complete with mullet, cowboy hat, and giant belt buckle. Oh, and a drink in hand, of course. "Vintage BS," he captioned the shot.

Bryan's wife, Caroline, even got in on the fun herself, donning a life jacket with "Sexiest Man Alive" emblazoned on it—a dig at Shelton's infamous People designation last year.

Caroline didn't stop at just teasing Shelton. She made sure to get a dig in at her own husband, too. "Luke really wanted to capture the vintage Blake look...but he actually looks like Luke from our college days," she observed. (Pretty funny, but since the Bryans met when they were in college, we're guessing Caroline knows what she's talking about!)

Crash My Playa, which Bryan hosts at an all-inclusive resort in Riviera Maya, kicked off on Jan. 17 and ran through Jan. 20. In addition to Bryan and Shelton, the bill featured Sam Hunt, Maren Morris and her fiancé Ryan Hurd, Brett Young, the Cadillac Three, Dustin Lynch and Maggie Rose.

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