What a difference a year makes! Christina, pictured here at the 2012 AMAs and the 2013 AMAs, looks dramatically different, thanks in part to a shocking weight loss. See how she did it below!

Christina Aguilera, 32, looks better than ever! At the 2013 American Music Awards, held in Los Angeles on Nov. 24, she looked like an angel in a super sexy, white cut out dress. She showed off her amazing figure after a reported 50 pound weight loss! Read more about her new diet right here.

Christina Aguilera Weight Loss - Skinny At American Music Awards

Christina first hit the red carpet, glowing in a white Maria Lucia Hohan gown. She wore Christian Louboutin shoes, a Jimmy Choo bag, Lorraine Schwartz jewels, and a shiny coral lip. Her platinum hair was styled by celebrity hairstylistDavid Babaii. During the show, she took the stage in a slinky black dress to sing "Say Something" with A Great Big World.

Christina's Exact Diet Revealed

Life & Style reported Christina's exact diet in September. She avoids empty calories like alcohol and saves comfort food for very special occasions.

Instead of pancakes, she chooses blueberries, turkey bacon, and half an avocado for a filling breakfast.

She loves celery with almond butter and shrimp cocktails as snacks. For lunch, she chooses the ever-popular chicken breast over salad. She skips creamy dressings like ranch or blue cheese. For dinner, Christina likes chicken or fish curry.

More from Hollywood Life:
Christina Aguilera's Sexiest Looks After 49 Lb. Weight Loss - PICS
Christina Aguilera's 49 Lb. Weight Loss - Her Exact Diet Revealed
Christina Aguilera Shows Off Weight Loss & Red Lips On 'Voice' Premiere