Xtina looked like her old-self when Christina Aguilera appeared at NBC's "The Voice" premiere Wednesday with her toned new physique.

Aguilera walking down the red carpet at TCL Chinese Theatre in Los Angeles looked noticeably slimmer and fans tweeted about the singer's weight loss after seeing photos of her new body.

Aguilera's weight loss much been the talk of the town over the past year, as she turned heads at the event, it seems the new slim body will quiet the critics.

Aguilera looked lovely in a little black and white dress and Christian Louboutin heels, showing off her tanned, toned legs.

The "Dirty" singer even though isn't coming back to the show made an appearance at the event. She said, "I can't say anything right now. I can only do what feels right for me in the moment and right now what's important for me, and this is why I love the show, and why I'm coming back in support."

Aguilera offered motherly advice to fellow judge Shakira, "Everybody figures it out at their own pace, you know, it's a juggling act, it's a balancing act to take on your responsibility in front of the camera, and then be Mommy behind... Shakira seems like a tough girl that can hold her own, especially with these boys!"

According to an insider the singer is simply happier and less stressed out these days, according to People magazine.

"Without the grueling production hours, Christina can focus on her music and her son and most important on herself," an insider explains for the mag.

"It's amazing what having some personal time can do, not only for the body but also for the mind and the spirit," the insider goes on to say.

"She has been trying new types of foods and exploring new methods of exercise. Not for diet or weight, but more for her mind and wellbeing and overall sense of good health," the tipster shares.