Ariana Grande stuns the AMAs with jazzy (partly) acoustic performance

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Ariana Grande stuns the AMAs with jazzy (partly) acoustic performance
LOS ANGELES, CA - NOVEMBER 23: Singers Ariana Grande (L) and Abel Tesfaye perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artists The Weeknd (L) and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artists Jessie J, Nicki Minaj and Ariana Grande (L-R) perform onstage during the 2014 American Music Awards held at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage during the 2014 American Music Awards held at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage during the 2014 American Music Awards held at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Recording artists Charli XCX, Nicki Minaj, and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artists (L-R) Jessie J, Nicki Minaj and Ariana Grande perform onstage during the 2014 American Music Awards held at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Recording artists (L-R) Jessie J, Nicki Minaj and Ariana Grande perform onstage during the 2014 American Music Awards held at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Recording artists Jessie J, Nicki Minaj, and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
Ariana Grande performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
LOS ANGELES, CA - NOVEMBER 23: Recording artists Ariana Grande and Jessie J perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Singer Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Recording artists Nicki Minaj, Charli XCX and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
LOS ANGELES, CA - NOVEMBER 23: Singer Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Singer Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
LOS ANGELES, CA - NOVEMBER 23: Singer Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Singer Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Nicki Minaj, Jessie J and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Mazur/AMA2014/WireImage)
Jessie J, from left, Nicki Minaj and Ariana Grande perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jessie J, from left, Nicki Minaj and Ariana Grande perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Recording artists Jessie J, Nicki Minaj, and Ariana Grande perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Christopher Polk/AMA2014/Getty Images for DCP)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ariana Grande performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Taylor Swift performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX (C) performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX (holding microphone) performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX (C) performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Charli XCX performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Dan Reynolds of music group Imagine Dragons performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Dan Reynolds of music group Imagine Dragons performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Dan Reynolds of music group Imagine Dragons performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Dan Reynolds of music group Imagine Dragons performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Dan Reynolds of music group Imagine Dragons performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Sam Smith performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Sam Smith performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist ASAP Rocky performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist ASAP Rocky performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artists ASAP Rocky (L) and Sam Smith perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artists Sam Smith (L) and ASAP Rocky perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Iggy Azalea performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Iggy Azalea performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Iggy Azalea performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Iggy Azalea performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Iggy Azalea performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: 5 Seconds of Summer perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Mazur/AMA2014/WireImage)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Musicians Michael Clifford, Ashton Irwin, Luke Hemmings and Calum Hood of 5 Seconds of Summer perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Musicians Michael Clifford, Ashton Irwin, Luke Hemmings and Calum Hood of 5 Seconds of Summer perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Musicians Michael Clifford, Ashton Irwin, Luke Hemmings and Calum Hood of 5 Seconds of Summer perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
LOS ANGELES, CA - NOVEMBER 23: (L-R) Musicians Michael Clifford, Ashton Irwin, Luke Hemmings and Calum Hood of 5 Seconds of Summer perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
LOS ANGELES, CA - NOVEMBER 23: Singers Nasri (L), of Magic!, and Wyclef Jean perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Singers Nasri (L), of Magic!, and Wyclef Jean perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Singers Nasri (L), of Magic!, and Wyclef Jean perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Jeff Kravitz/AMA2014/FilmMagic)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Lorde performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Lorde performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Lorde performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Lorde performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Lorde performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ne-Yo (L) and host Pitbull perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ne-Yo (L) and host Pitbull perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Ne-Yo (L) and host Pitbull perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Mary J. Blige performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Mary J. Blige performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Xiao Yang, left, and Wang Taili, of the musical group Chopstick Brothers, perform on stage at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez, left, is embraced by Pitbull at the end of her performance at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Iggy Azalea, left, and Jennifer Lopez perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez, left, and Iggy Azalea perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Lopez performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Nicki Minaj, from left, Jessie J and Ariana Grande perform on stage at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie, left, and DJ Mustard perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie, left, and YG perform at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Fergie performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Pitbull performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Luke Hemmings of the group 5 Seconds of Summer performs on stage at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Dan Reynolds of the group Imagine Dragons performs at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Wyclef Jean, center, and from left, Mark Pellizzer, Nasri, Alex Tanas and Ben Spivak of the musical group Magic! perform on stage at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Wyclef Jean performs on stage at the 42nd annual American Music Awards at Nokia Theatre L.A. Live on Sunday, Nov. 23, 2014, in Los Angeles. (Photo by Matt SaylesInvision/AP)
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Taylor Swift may have turned up the heat with a pyro-tastic performance at the 2014 American Music Awards, but Ariana Grande blew the crowd away with a special, stripped-down medley of her latest hits.

Ariana Grande's Sexy 'Love Me Harder' 2014 AMAs Performance

The lights came up on a stunningly beautiful Ariana Grande wearing one of the classiest sheer black-lace gowns we've ever seen, and suddenly we were serenaded by acoustic jazz versions of her songs "Problems" and "Break Free."

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Showing off the power of her vocal range while still managing to look classically gorgeous, Ariana, 21, seemed to be on a mission to prove that she's an adult, and can look good in styles other than mini-skirts and pony-tails

After the slow, melodic accompaniment of the piano and saxophone, the medley transitioned into "Love Me Harder" and the acoustic performance dropped away in favor of more modern spectacle for her duet with The Weeknd. (It still rocked!)

VIDEO: Ariana Grande Goes Galactic Glam In Awesome Sci-Fi 'Break Free' Video

The performance solidifies Grande's super star status, proving that she has the raw talent to hang with classic songstresses and lounge singers of yesteryear - plus the flair to dominate the pop landscape she's excelled with this past year.

If nothing else, it was a far cry from her Forbidden Planet-themed sci-fi spectacular that was her MTV EMA's medley earlier this month.

Earlier this year, Ariana had been battling rumors that she's a "diva" and that she's hard to work with. Check out the video below to hear how the "Problem" singer responds to these claims.

Ariana Grande Slams 'Diva' Rumors

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