Backstreet Boys shut it down at ACM Awards with Florida Georgia Line -- Tim McGraw, Carrie Underwood lose it!


The Backstreet Boys go country!

The boyband brought the house down with their collaboration with Florida Georgia Line at the Academy of Country Music Awards in Las Vegas on Sunday night.

WATCH: 2017 ACM Awards Performers: Luke Bryan, Miranda Lambert, Dierks Bentley, Backstreet Boys and More!

Nick Carter, Kevin Richardson, AJ McLean, Howie Dorough and Brian Littrell first performed their duet with Florida Georgia Line, "God, Your Mama and Me," before getting the crowd on their feet with a slightly country-ish version of their hit, "Everybody," as Carter descended from the stage to rub elbows with country royalty.

See photos from the ACMs 2017 red carpet:

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2017 ACM Awards: Red carpet arrivals
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2017 ACM Awards: Red carpet arrivals
LAS VEGAS, NV - APRIL 02: Singer CAM attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
Singer Jessie James Decker arrives for the 52nd Academy of Country Music Awards on April 2, 2017, at the T-Mobile Arena in Las Vegas, Nevada. / AFP PHOTO / Tommaso Boddi (Photo credit should read TOMMASO BODDI/AFP/Getty Images)
LAS VEGAS, NV - APRIL 02: Singers Tim McGraw (L) and Faith Hill attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Jeff Kravitz/ACMA2017/FilmMagic for ACM)
LAS VEGAS, NV - APRIL 02: Actor Nicole Kidman (L) and recording artist Keith Urban attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Carrie Underwood attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Co-host Luke Bryan attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Miranda Lambert attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
Kelsea Ballerini donned David Yurman earrings from the Chatelaine Collection to the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: (L-R) Recording artsits Nick Carter, AJ McLean, Brian Littrell, Howie D, and Kevin Richardson of music group Backstreet Boys attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artists Lauren Daigle (L) and Reba McEntire attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Maren Morris attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: (L-R) Recording artists Jimi Westbrook, Karen Fairchild, Kimberly Schlapman, and Phillip Sweet of music group Little Big Town attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: NFL player Eric Decker attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Lauren Alaina attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Kellie Pickler attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Thomas Rhett (L) and Lauren Gregory Akins attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Kevin Mazur/ACMA2017/Getty Images for ACM)
LAS VEGAS, NV - APRIL 02: Recording artist Jason Aldean attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Scotty McCreery attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artist Brett Eldredge attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Kevin Mazur/ACMA2017/Getty Images for ACM)
LAS VEGAS, NV - APRIL 02: (L-R) Recording artists Dave Haywood, Hillary Scott, and Charles Kelley of music group Lady Antebellum attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Kevin Mazur/ACMA2017/Getty Images for ACM)
LAS VEGAS, NV - APRIL 02: Recording artists Maddie Marlow (L) and Taylor 'Tae' Dye of music group Maddie & Tae attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: TV personality Savannah Chrisley attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist-actor Charles Esten attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Kacey Musgraves attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist RaeLynn attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist RaeLynn attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer/songwriter Kip Moore attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artist Cassadee Pope attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: TV personalities Todd Chrisley (L) and Julie Chrisley attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Josh Turner (L) and Jennifer Ford attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: (L-R) Brittney Marie Cole, recording artists Brian Kelley and Tyler Hubbard of music group Florida Georgia Line, and Hayley Stommel attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Easton Corbin attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Dustin Lynch attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Cole Swindell attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Erica Nicole attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Misty Head (L) and recording artist Sundance Head attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
Recording artist Kayla Adams arrives for the 52nd Academy of Country Music Awards on April 2, 2017, at the T-Mobile Arena in Las Vegas, Nevada. / AFP PHOTO / Tommaso Boddi (Photo credit should read TOMMASO BODDI/AFP/Getty Images)
LAS VEGAS, NV - APRIL 02: Jessica Craig (L) and recording artist Clay Walker attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer-songwriter Carly Pearce attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Singer-songwriter Chase Bryant attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Lynette Abbott (L) and recording artist Josh Abbott of music group Josh Abbott Band attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Caroline Boyer (L) and co-host Luke Bryan attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Tucker Beathard attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artist Lindsay Ell attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Singer Aubrie Sellers attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artist Hillary Scott of music group Lady Antebellum attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Eric Paslay (L) and Natalie Harker attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
NFL player Eric Decker (L) and singer Jessie James Decker arrive for the 52nd Academy of Country Music Awards on April 2, 2017, at the T-Mobile Arena in Las Vegas, Nevada. / AFP PHOTO / Tommaso Boddi (Photo credit should read TOMMASO BODDI/AFP/Getty Images)
LAS VEGAS, NV - APRIL 02: TV personality Nancy O'Dell attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Luke Combs attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artists Maren Morris (L) and Ryan Hurd attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Christina Murphy (L) and recording artist Frankie Ballard attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Kimberly Watson (L) and singer Aaron Watson attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Sharona Nomder Kaikov (L) and songwriter Nitzan 'K-KOV' Kaikov attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Alex White (L) and recording artist Drake White attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Tegan Marieattends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Musicians Zach Swon (L) and Cotton Swon of The Swon Brothers attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Kane Brown attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Jason Aldean (L) and Brittany Kerr attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist William Michael Morgan attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Michael Ray attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artists Cowboy Troy (L) and DJ Sinister attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Cast members of 'Absinthe' attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Miss America 2017 Savvy Shields attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Chris Lane attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Sam Hunt attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Magician David Copperfield attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Karen Fairchild of music group Little Big Town attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Luke Dick attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Brittany Kerr attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Songwriter Ashley Gorley attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Denise Truscello/ACMA2017/Getty Images for ACM)
LAS VEGAS, NV - APRIL 02: Recording artist Joe Walsh attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Kevin Mazur/ACMA2017/Getty Images for ACM)
LAS VEGAS, NV - APRIL 02: Recording artist Jeff Hyde attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Recording artist Ross Copperman and Kaitlyn Copperman attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Musician Cody Alan (L) and Michael Trea Smith attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: NFL player Julian Edelman attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
LAS VEGAS, NV - APRIL 02: Singer Brett Young attends the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Recording artist Chris Stapleton (L) and Morgane Stapleton attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by John Shearer/WireImage)
LAS VEGAS, NV - APRIL 02: Co-host Dierks Bentley (L) and Cassidy Black attend the 52nd Academy Of Country Music Awards at Toshiba Plaza on April 2, 2017 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images)
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Everyone proceeded to lose their minds, starting with Nicole Kidman and Faith Hill:

RELATED: 2017 Academy of Country Music Awards -- The Complete Winners List

Then Carrie Underwood and Keith Urban got real into it:

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And then Tim McGraw absolutely lost it when Florida Georgia Line's Tyler Hubbard and Brian Kelley started doing a little Backstreet Boys choreography:

Backstreet's back, alright!

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