Gwen Stefani sings along to Blake Shelton's performance during sweet ACMs date night

Blake Shelton and Gwen Stefani had a low-key date night at the 53rd Annual Academy of Country Music Awards on Sunday, and the celeb couple couldn't have been cuter.

Shelton and Stefani skipped the red carpet at the MGM Grand Garden Arena in Las Vegas, but the pair looked as classy as ever as they sat front and center in the auditorium.

Shelton rocked a grey blazer and black button-down shirt, which he of course paired with some nice denim jeans, while Stefani stunned in a short crimson dress with black knee-high boots, with her long straight blonde locks cascading over her shoulders.

See Blake Shelton and Gwen Stefani at the ACMs:

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Blake Shelton and Gwen Stefani together
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Blake Shelton and Gwen Stefani together
LAS VEGAS, NV - APRIL 15: Blake Shelton (L) and Gwen Stefani attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jeff Kravitz/ACMA2018/FilmMagic for ACM)
LAS VEGAS, NV - APRIL 15: Blake Shelton (L) and Gwen Stefani attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jeff Kravitz/ACMA2018/FilmMagic for ACM)
LAS VEGAS, NV - APRIL 15: Blake Shelton and Gwen Stefani attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Blake Shelton and Gwen Stefani attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Merritt/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Blake Shelton and Gwen Stefani attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/ACMA2018/Getty Images for ACM)
@blakeshelton have a good show tonight we r missing u in L.A.❤️ gx
#youmakeitfeellikechristmas @nbcthevoice @blakeshelton #backstage gx
#❤️ #countrymusicfreakstour2018 @blakeshelton #stlouismissouri gx
Yay!! It was incredible to write with @BlakeShelton & share the stage for a song that is so joyful & Christmas-y! #YouMakeItFeelLikeChristmas #LuckyGirl 💋✨
EAST HAMPTON, NY - AUGUST 20: Blake Shelton and Gwen Stefani attend the Apollo in the Hamptons 2016 party at The Creeks on August 20, 2016 in East Hampton, New York. (Photo by Patrick McMullan/Patrick McMullan via Getty Images)
EAST HAMPTON, NY - AUGUST 20: Blake Shelton and Gwen Stefani perform at Apollo in the Hamptons 2016 at The Creeks on August 20, 2016 in East Hampton, New York. (Photo by Kevin Mazur/Getty Images for The Apollo)
EAST HAMPTON, NY - AUGUST 20: Blake Shelton, Gwen Stefani and Ronald O. Perelman attend Apollo in the Hamptons 2016 at The Creeks on August 20, 2016 in East Hampton, New York. (Photo by Kevin Mazur/Getty Images for The Apollo)
EAST HAMPTON, NY - AUGUST 20: Blake Shelton and Gwen Stefani attend Apollo in the Hamptons 2016 at The Creeks on August 20, 2016 in East Hampton, New York. (Photo by Kevin Mazur/Getty Images for The Apollo)
LAS VEGAS, NEVADA - MAY 22: Blake Shelton and Gwen Stefani are seen on stage during the 2016 Billboard Music Awards held at the T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by JB Lacroix/WireImage)
Blake Shelton and Gwen Stefani embrace after performing "Go Ahead And Break My Heart" at the 2016 Billboard Awards in Las Vegas, Nevada, U.S., May 22, 2016. REUTERS/Mario Anzuoni
LAS VEGAS, NV - MAY 22: Recording artists Gwen Stefani (L) and Blake Shelton perform onstage during the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nevada. (Photo by Kevin Winter/Getty Images)
BURBANK, CA - MAY 09: Singers Blake Shelton (L) and Gwen Stefani perform on the Honda Stage at the iHeartRadio Theater on May 9, 2016 in Burbank, California. (Photo by Kevin Winter/Getty Images for iHeartMedia)
BURBANK, CA - MAY 09: Singers Blake Shelton (L) and Gwen Stefani perform on the Honda Stage at the iHeartRadio Theater on May 9, 2016 in Burbank, California. (Photo by Kevin Winter/Getty Images for iHeartMedia)
DISNEY CHANNEL PRESENTS THE RADIO DISNEY MUSIC AWARDS - Entertainment's brightest young stars turned out for the 2016 Radio Disney Music Awards (RDMA), music's biggest event for families, at Microsoft Theater in Los Angeles on Saturday, April 30. 'Disney Channel Presents the 2016 Radio Disney Music Awards' airs Sunday, May 1 (7:00 p.m. EDT). (Image Group LA /Disney Channel) BLAKE SHELTON, GWEN STEFANI
BEVERLY HILLS, CA - FEBRUARY 28: Recording artists Gwen Stefani (L) and Blake Shelton arrive at the 2016 Vanity Fair Oscar Party Hosted By Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 28, 2016 in Beverly Hills, California. (Photo by John Shearer/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 28: Recording artists Gwen Stefani (L) and Blake Shelton arrive at the 2016 Vanity Fair Oscar Party Hosted By Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 28, 2016 in Beverly Hills, California. (Photo by John Shearer/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 14: Blake Shelton and Gwen Stefani attend the 2016 Pre-GRAMMY Gala and Salute to Industry Icons honoring Irving Azoff at The Beverly Hilton Hotel on February 14, 2016 in Beverly Hills, California. (Photo by Kevin Mazur/WireImage)
BEVERLY HILLS, CA - FEBRUARY 14: Recording artists Blake Shelton (L) and Gwen Stefani attend the 2016 Pre-GRAMMY Gala and Salute to Industry Icons honoring Irving Azoff at The Beverly Hilton Hotel on February 14, 2016 in Beverly Hills, California. (Photo by Kevin Mazur/WireImage)
GLENDALE, AZ - DECEMBER 27: Gwen Stefani and Blake Shelton wave to fans prior to the NFL game between the Green Bay Packers and Arizona Cardinals at University of Phoenix Stadium on December 27, 2015 in Glendale, Arizona. (Photo by Norm Hall/Getty Images)
GLENDALE, AZ - DECEMBER 27: Musicians Gwen Stefani and Blake Shelton attend the NFL game between the Green Bay Packers and Arizona Cardinals at the University of Phoenix Stadium on December 27, 2015 in Glendale, Arizona. (Photo by Christian Petersen/Getty Images)
Dec 27, 2015; Glendale, AZ, USA; Recording artist Gwen Stefani (left) and country singer boyfriend Blake Shelton on the Arizona Cardinals sideline prior to the game against the Green Bay Packers at University of Phoenix Stadium. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports
GLENDALE, AZ - DECEMBER 27: Musicians Gwen Stefani and Blake Shelton attend the NFL game between the Green Bay Packers and Arizona Cardinals at the University of Phoenix Stadium on December 27, 2015 in Glendale, Arizona. (Photo by Christian Petersen/Getty Images)
Cast member Blake Shelton and singer Gwen Stefani laugh at the party following the premiere for "The Angry Birds Movie" in Los Angeles, U.S., May 7, 2016. REUTERS/Mario Anzuoni
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0126 -- Pictured: (l-r) Singer Gwen Stefani and singer Blake Shelton during a lip synch battle on September 17, 2014 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- Season: 7 -- Pictured: (l-r) Adam Levine, Carson Daly, Gwen Stefani, Blake Shelton, Pharrell Williams -- (Photo by: Art Streiber/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Blind Auditions' Episode 701 -- Pictured: (l-r) Adam Levine, Gwen Stefani, Pharrell Williams, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Blind Auditions' Episode 701 -- Pictured: (l-r) Adam Levine, Pharrell Williams, Blake Shelton, Gwen Stefani, Carson Daly -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Blind Auditions' Episode 701 -- Pictured: (l-r) Adam Levine, Gwen Stefani, Blake Shelton, Pharrell Williams -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Live Show' Episode 718B -- Pictured: (l-r) Gwen Stefani, Craig Wayne Boyd, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Season 9 Press Junket' -- Pictured: (l-r) Pharrell Williams, Adam Levine, Carson Daly, Gwen Stefani, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0353 -- Pictured: (l-r) Singer Adam Levine, singer Gwen Stefani, host Jimmy Fallon, singer Blake Shelton, and singer Pharrell Williams play Spin the Microphone with The Voice Coaches on October 26, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Battle Rounds' -- Pictured: (l-r) Adam Levine, Pharrell Williams, Blake Shelton, Gwen Stefani -- (Photo by: Trae Patton/NBC)
THE VOICE -- 'Live Show' Episode 718B -- Pictured: (l-r) Gwen Stefani, Adam Levine, Pharrell Williams, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Blind Auditions' -- Pictured: (l-r) Pharrell Williams, Gwen Stefani, Blake Shelton -- (Photo by: Trae Patton/NBC)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0353 -- Pictured: (l-r) Singer Adam Levine, singer Gwen Stefani, host Jimmy Fallon, singer Blake Shelton, and singer Pharrell Williams play Spin the Microphone with The Voice Coaches on October 26, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - OCTOBER 27: Singers Adam Levine,Blake Shelton, Gwen Stefani, Pharell Williams are seen on the 'Today Show'on October 27, 2015 in New York City. (Photo by Raymond Hall/GC Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0353 -- Pictured: (l-r) Singer Adam Levine, singer Gwen Stefani, host Jimmy Fallon, singer Blake Shelton, and singer Pharrell Williams play Spin the Microphone with The Voice Coaches on October 26, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Live Top 11' Episode 915B -- Pictured: (l-r) Adam Levine, Gwen Stefani, Pharrell Williams, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Live Semis' Episode 917B -- Pictured: (l-r) Adam Levine, Gwen Stefani, Pharrell Williams, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
THE VOICE -- 'Live Show' Episode 718B -- Pictured: (l-r) Gwen Stefani, Craig Wayne Boyd, Blake Shelton -- (Photo by: Trae Patton/NBC/NBCU Photo Bank via Getty Images)
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During the show, the country crooner took the stage for a performance of his single "I Lived It," as his lady love stared up at him and adorably sang along to the romantic tune, which Shelton appeared to be singing directly down toward her.

She was just as enthusiastic as his number came to a close, jumping to her feet and beaming as she gave him a standing ovation.

The high-profile twosome nabbed plenty of screen time throughout the show, as the ACM cameras cut to the couple repeatedly, starting when host Reba McEntire poked fun at Shelton and former ACM hosts Luke Bryan and Dierks Bentley.

"This year I'm following some guys who have done such a great job as host, and before that, Luke and Blake," McEntire said, as the guys cheered from the audience. "I guess they finally figured out it only takes one woman to do the job of two men."

See all the couples at the 2018 ACM Awards:

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ACM Awards 2018: Couples on the red carpet
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ACM Awards 2018: Couples on the red carpet
LAS VEGAS, NV - APRIL 15: Morgan Evans (L) and Kelsea Ballerini attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Morgan Evans (L) and Kelsea Ballerini attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Thomas Rhett (L) and Lauren Akins attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Thomas Rhett (L) and Lauren Akins attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Maren Morris (L) and Ryan Hurd attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Maren Morris (L) and Ryan Hurd attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Cody Alan (L) and Michael Trea Smith attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Marielle McKamy (L) and TK McKamy attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Caroline Boyer (L) and Luke Bryan attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Brett Young (L) and Taylor Mills attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Kempin/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Scotty McCreery (R) and Gabi Dugal attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Kempin/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Craig Campbell (L) and Mindy Ellis attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Kailey Dickerson (L) and Russell Dickerson attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Curtis Rempel (2nd L) and Brad Rempel (2nd R) of High Valley attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Kempin/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Walker Hayes (R) and Laney Beville Hayes attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Kempin/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Chase Chrisley, Julie Chrisley, and Todd Chrisley attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Emma Mcintyre/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Brantley Gilbert (L) and Amber Cochran attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Granger Smith (L) and Amber Bartlett attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Jordan Davis AND Kristen O'Connor attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Eric Paslay (L) and Natalie Harker attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Maren Morris (L) and Ryan Hurd attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Adam Weaver (L) and Cam attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Jason Aldean (L) and Brittany Kerr attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Kristian Bush (L) and Jennifer Nettles of Sugarland attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Preston Brust (2nd L) and Chris Lucas (2nd R) of LOCASH attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Jason Kempin/ACMA2018/Getty Images for ACM)
LAS VEGAS, NV - APRIL 15: Nicole Kidman (L) and Keith Urban attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Caroline Boyer (L) and Luke Bryan attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada (Photo by Tommaso Boddi/Getty Images)
LAS VEGAS, NV - APRIL 15: Nicole Kidman (L) and Keith Urban attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 15: Rebecca Romijn (L) and Jerry O'Connell attend the 53rd Academy of Country Music Awards at MGM Grand Garden Arena on April 15, 2018 in Las Vegas, Nevada. (Photo by Michael Tran/FilmMagic)
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Immediately after McEntire's brilliant jab, cameras cut to Shelton's ex-wife, Miranda Lambert, who laughed and cheered the country queen on.

Although the joke also got a standing ovation from Bryan, Bentley, Shelton and Stefani, who applauded McEntire's undeniable dominance as the greatest Academy of Country Music Awards host ever.

Throughout the night, Shelton and Stefani appeared to be having a wonderful time, and fans couldn't get over just how regal they looked together.

"The King and his Queen are in the house," one fan posted to Twitter as the show kicked off, as another referred to the couple as simply "royalty."

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