We would like to start a slow clap for the newly trim Christina Aguilera. Homegirl has taken her time off from The Voice to tone up and slim down and it certainly shows.

The pop diva rarely makes public appearances, but when she does, she makes them count. In March 2013 she made a surprise visit to the Los Angeles premiere of The Voice Season 4. Her toned-down look and slender physique shocked fans and critics alike.

But that was only the beginning of Xtina’s sexy red carpet style. In April 2013 she attended the TIME 100 Gala in a black form-fitting Victoria Beckham gown that accentuated her hourglass figure.

Then last week the “Beautiful” singer upped her game, tweeting a midriff-baring pic while wearing a black bra and skin-tight skirt.

So when she took to the stage with rapper Pitbull at the Billboard Music Awards in a flirty black dress with a flared-out bottom, the transformation couldn’t have been more drastic. In less than two years, the singer has worked hard to get in shape and drop the extra pounds.

We’re also proud of her classier style in the wake of her colorful Lotus attire. Instead of pink extensions and over-the-top unitards, Xtina is rocking more sophisticated looks that flatter her curvy figure. These styles certain do our no. 1 diva justice and we couldn’t be more excited to see them on Season 5 of The Voice!

What do you think of Christina’s Billboard Music Awards look? Weigh in below!