Christina Aguilera weight loss, 'The Voice' beauty debunks liposuction rumors after amazing 35-pound drop [PHOTOS]: works hard with diet, exercise

Sources confirm that "The Voice" songstress Christina Aguilera has dropped an amazing 35-pounds over the past several months - and she did it through a hardcore diet and exercise regimen. Aguilera did NOT get liposuction!

"Christina didn't get lipo. She's worked hard to change her eating habits, and you can see the results," a friend close to the "Beautiful" crooner tells Life & Style. "The last thing Christina wants to hear is that people are talking about her losing weight with liposuction. She's sick and tired of people assuming things about her body."

So... how did the 33-year-old pop starlet drop the weight so fast?

"Christina takes her lunches and snacks with her to work now, so she can watch how much she eats instead of overindulging in anything bad for her," the source explains. "She eats carbs, protein, snacks like pretzels - she just watches how much she eats."

The stunning mother-of-one also limits "empty calories" by cutting back on alcohol.

She also loves doing yoga to keep active and de-stress.  "She loves her body now. She really is happy."

According to HollywoodLife.com, nutritionist Keri Glassman agrees this sort of regimen can work for any "real" women - "If you learn to control portions and also focus on eating the right quality foods - those loaded with fiber and protein - you'll end up being healthier and lose weight. It's important not to eat until you're stuffed and also not to wait until you're starving."

What do Mstars fans think of Aguilera's stunning body transformation?