11/25/2013 09:39 EST

Christina Aguilera American Music Awards 2013: Singer Shows Off Svelte Figure (VIDEO, PHOTOS)

Christina Aguilera is a completely different woman!

"The Voice" judge took our breath away when she strutted on the 2013 American Music Awards red carpet on Sunday looking miles away from her appearance at the AMAs a year ago.

Wearing a sexy white Maria Lucia Hohan cutout dress, the mom flaunted her weight loss and svelte figure in the long-sleeve gown which featured a high-slit and a dangerously lowcut neckline.

Never one to skimp out on bling, the blond beauty accessorized with huge diamond pendant earrings, a blinding sparkly Jimmy Choo clutch, glittery Christian Louboutin pumps and oversized cocktail rings.

But there was one major difference: Rather than sport her usual vampy red lips, Xtina toned down her makeup with coral-red lip lacquer. (At least her platinum Old Hollywood waves were there!)

What a difference a year makes, eh? At the 2012 AMAs, the singer showed off a much curvier body in a beautiful lavendar dress and received some unfair harsh criticism for her fuller figure.

Haters gonna hate!

You're gorgeous, Christina!

Photo gallery 2013 American Music Awards Red Carpet See Gallery