Christina Aguilera looked ravishing in her little pink dress as she flaunted her slimmed-down body at the NBC press event in Beverly Hills last Saturday.

Back on the red seat as coach of The Voice for the upcoming season, the singer was all smiles as she let photographers snap pictures of her with her new sexy body and loose, wavy blonde locks.

Xtina first debuted her toned bod in a Twitter picture shot at the video shoot of "Hoy Tengo Ganas De Ti." According to E! Online, the singer wore a "black bralette and black body-con skirt" highlighting her curves, as she posed on a balcony with the beach behind her.

The singer has been the talk of the town for many months after she gained pounds during and after her pregnancy. Many have criticized her for her weight, but it seems that she's shutting them up now with her new physique.

So how exactly did this superstar mom get so slim? Sources tell E! Online that Christina is taking a healthier approach to keep her body looking good!

"[She's] making herself a priority, trying new exercises and trying things she loves and enjoys rather than stuff to just 'lose weight.' This is really from the inside out."

We'll be seeing more of Christina Aguilera's sexy body as she returns on The Voice Sept. 23 on NBC.