Christina Aguilera is looking better than ever these days, and has lost more weight since first showing off a slimmer body last month at the season 4 premiere of “The Voice.”

While attending the Time 100 Gala in New York on Tuesday, Aguilera rocked a cut-out form-fitting black dress that hugged her new curves. She paired the dress with a number of diamonds and red lipstick.

Aguilera certainly looked more toned than she has in recent months.                                                                                                                                                                            [[nid:1214761]]

Aguilera divorced Jordan Bratman in October 2010, and noticeably gained weight since.

"I've been through my highs, I've been through my lows; I've been through the gamut of all things in this business. Being too thin. Being bigger," Aguilera said in an interview with Marie Claire magazine in October.

"I've been criticized for being on both sides of the scale. It's noise I block out automatically. I love my body. My boyfriend loooves my body. My son [4-year-old Max] is healthy and happy, so that's all that matters to me,” she continued.

Following her divorce, Aguilera has been dating Matthew Rutler.

Based on her appearance at the Time 100 Gala, it seems Aguilera has been sticking to a healthier diet and exercise regimen these days.