Karen Fairchild, Kimberly Schlapman, Phillip Sweet and Jimi Westbrook, known together as the country quartet Little Big Town, have been together since 1998. Their two decades of experience are filled with monumental moments.

Little Big Town have released eight studio albums, several of which have been certified platinum by the RIAA. Their work includes No. 1 hits such as "Boondocks," "Little White Church," "Pontoon," "Girl Crush" and the recent Grammys winner "Better Man" (penned by Taylor Swift). Grand Ole Opry members since 2014, the four artists have let their harmonious voices lead the way to much acclaim. They are the first act in history to have a residency at Nashville's Ryman Auditorium and will soon be the first act to play the C2C: Country to Country Festival three times.

Currently, Little Big Town are gearing up for their 2018 Breakers Tour; they'll bring Kacey Musgraves and Midland along for the 26-date ride.

"We’re going to do it like Reba [McEntire]: We’re going to costume-change booths and everything," Schlapman reveals. "It’s the biggest headlining tour we’ve ever done. We’re so excited about Kacey Musgraves, who we adore, and Midland, who we’re kind of scared of. I’m just kidding ... We’re going to have a big ol’ time."

After that, LBT will embark on a co-headlining tour with Miranda Lambert. That kicks off in July. The band will be racking up their hours onstage in 2018, and they'll be showing fans exactly why they're one of country's most-beloved groups. Click through the photo gallery above to see some of Little Big Town's best live pictures from over the years.

Unforgettable Little Big Town Moments