What a difference a year makes! Christina Aguilera is a svelte shadow of her former self as she poses in revealing white gown at AMA awards

By Daily Mail Reporter
What a difference a year makes.
Christina Aguilera dropped jaws in a curve-hugging white dress at the 2013 American Music Awards in Los Angeles on Sunday.
The 32-year-old singer looked significantly trimmer in the gown than her appearance at the awards show the year before.

  

What a difference a year makes: Christina Aguilera was a shadow of her former self at the 2013 American Music Awards in Los Angeles on Sunday night, left, in comparison to her appearance the year before, right 

Her white floor-length gown revealed her tanned and toned legs with a thigh-high slit, while diamond shaped side cutouts showed off her taught midsection.

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The long-sleeve frock also bared her ample cleavage with it's extremely low-cut V-neck.
The sultry singer paired her outfit with crystal encrusted open-toed heels, a silver clutch and large diamond drop earrings.

Stunning: The Genie in a Bottle singer sexed up the carpet in her white long gown

Glamour puss: The 32-year-old singer dropped jaws in the sexy white gown

 

Strike a pose: The singer made sure to show off all her best angles as she posted for photographers

She wore her platinum locks parted to the side and lightly curled.
Invoking Old Hollywood glamour, the Beautiful crooner painted her lips red and lined her eyes in black.
The outfit was a complete 180 from the 2012 AMAs, where her more voluptuous frame was covered in a multi-hued purple chiffon dress. 

Old Hollywood: Christina wore her hair in Old Hollywood style curls and dazzled with sparkling accessories

Golden girl: Christina's wore shimmery gold eyeshadow, black eyeliner and red lipstick for makeup

Later in the evening, Christina swapped her white gown for an understated black dress to sing the ballad Say Something with the indie band A Great Big World.
The bombshell pulled her hair back and toned down her makeup for the emotional performance.
Christina, whose weight has yo-yoed over the years, has recently been showing off her slender figure on The Voice.

Show them how it's done: Christina owned the red carpet in her silver, open-toed heels 

A cut above: The Beautiful singer's dress had a super-low V-neck and diamond cutouts

Change up: The former Mickey Mouse Club member swapped her sexy white dress for a subdued black one to perform Say Something during the show

The show's only female judge rocked fishnets and bedazzled knickers during a performance this week.
She was joined on stage for a Michael and Janet Jackson tribute by her remaining team members, Matthew Schuler and 16-year-old Jacquie Lee.
All eyes were on Christina though as she outperformed -- and sang -- Matthew and Jacquie.

Clean slate: The singer toned down her hair and makeup to sing the touching ballad

Collaboration: Christina teamed with the indie band A Great Big World on the song

The other judges gave the Genie in a Bottle singer and her team a standing ovation.
Host Carson Daly later said it was 'the best team performance we've ever had on this show.'
'Agreed,' Adam said loudly.

Say Something: The touching song is about lovers who are forced to say goodbye

Debut: The song recently premiered on The Voice

WINNERS LIST - 2013 AMERICAN MUSIC AWARDS

Favorite Male Artist, Pop/Rock
Justin Timberlake


Up and coming: Ariana Grande won Kohl's New
Artist of the Year award at the event

Favorite Female Artist, Soul/R&B
Rihanna

Favorite Album, Country
Taylor Swift/Red

Favorite Album, Rap/Hip-Hop
Macklemore & Ryan Lewis/The Heist

Favorite Artist, Alternative Rock
Imagine Dragons

Favorite Artist, Latin
Marc Anthony

Favorite Album, Pop/Rock
One Direction/Take Me Home
New Artist of the Year
Ariana Grande
Favorite Male Artist, Soul/R&B
Justin Timberlake
Favorite Female Artist, Country
Taylor Swift
Single of the Year
"Cruise" by Florida Georgia Line, featuring Nelly

Beyond a joke: Justin collects yet more awards for his music

 

Favorite Album, Soul/R&B
Justin Timberlake/The 20/20 Experience

Favorite Artist, Electronic Dance Music
Avicii
Favorite Male Artist, Country
Luke Bryan
Favorite Band, Duo or Group, Pop/Rock
One Direction
Artist of the Year 
Taylor Swift
Favorite Female Artist, Pop or Rock
Taylor Swift
Favorite Band, Duo or Group, Country
Macklemore & Ryan Lewis

Favorite Artist, Adult Contemporary
Maroon 5

Favorite Artist, Contemporary Inspirational
Matthew West
Top Soundtrack
Pitch Perfect