ACM Awards: Country Superstars, Milestone Moments, Dazzling Duets and More!

Blake Shelton and Luke Bryan honored country music's best at this year's 50th annual Academy of Country Music Awards, where an all-star guest list of musicians, presenters and A-listers were in attendance at the AT&T Stadium in Arlington, Texas.

Check out red carpet looks, performances and more in our ACM 2015 Awards gallery.

Miranda Lambert was queen of the country scene, rocking the red carpet in a white Bibhu Mohapatra dress, and rocking even harder on stage later performing her back-to-back hits “Mama's Broken Heart" and "Little Red Wagon" wearing a sexy red bustier. The country superstar was the big winner of the evening, taking home four awards, including Best Album and Song of the Year.

Taylor Swift received a milestone award from her mama, and there wasn't a dry eye in the stadium. "I've watched this milestone artist from the time she was a tangle-haired little girl growing up on our farm full of imagination and creativity," Taylor's mom Andrea said as she presented her daughter with the Milestone Youngest ACM Entertainer of the Year Award. "I'd like to thank the ACMs for honoring her in this way, but I'd also like to thank the entire music community for taking such good care of her."

Superstars Reese Witherspoon and Sofia Vergara stopped by the musical event showing their love for one another, Miranda Lambert and their new movie “The Hot Pursuit.”

“American Sniper” Chris Kyle's widow Taye Kyle introduced Garth Brooks and thanked the men and women who devote their lives to serving America, saying, "I'm extremely grateful to all the first responders, veterans and their families for all their sacrifices," Kyle said on stage. "I hope their example will continue to inspire a culture of service in hometowns across this country."

Country legend Randy Travis made a surprise appearance at the show two years after suffering a stroke, as Lee Brice paid tribute to the music icon by singing his hit “Forever and Ever, Amen.”

Superstar surprise duets also took center stage with Nick Jonas joining country duo Dan + Shay, doing a mash-up of Jonas' hit “Chains,” and Dan + Shay's “Nothin' Like You,” while Christina Aguilera sang “Shotgun” and “Riot” with Rascal Flatts.

ACM host and fan favorite Luke Bryan took home the top honor of the night, beating Miranda Lambert, Garth Brooks, Jason Aldean and Florida Georgia Line for the Entertainer of the Year Award.

“Thank you to my wife, my kids… my fans, country radio,” said Bryan as he accepted the honor.