It's no secret that some of country music's favorite men love to don a pair of fitted blue jeans for performances, awards shows and everyday appearances -- but who takes the cake for tightest pants? Charles Kelley (of Lady Antebellum) thinks there's no question who wears the snuggest-fitting pants in all of the genre.

Kelley stopped by the radio show Electric Barnyard to discuss stage wardrobes and his good pal, Luke Bryan. Although he took some time to poke a little fun at the 'Drink a Beer' singer, he also made it clear it was all in good fun.

"Luke is one of my best friends, man," Kelley shares. "He’s a nut. He’s one of the funniest guys to be around.”

But the Lady A singer had no problem ragging on his friend and his tight fitting pants. He said it's no contest who wears the tighter pants anymore. "I used to," Kelley explains, adding, "I think he's taken the crown now."

Bryan doesn't keep it quiet that his pants are so tight, he can't even fit underwear under them.

"That's also too because Luke is dirty," Kelley jokes, going to on say that he personally does fit undies under his denim. "I wouldn't be surprised [if Bryan didn't wear underwear] with all that gyrating he does on stage, he doesn't wanna restrict himself any more than he has to, I guess.”

When Bryan brought his tour to Nashville, Lady A's Kelley and Dave Haywood hopped onstage to sing 'I Do,' a song the three wrote together, and Kelley said he was surprised Bryan could break out his signature dance moves to a slow song.

He says hilariously, “I’ll be damned if Luke Bryan can’t be find a way to gyrate on a ballad, but he did it."