Christina Aguilera's Extreme Weight Loss: Did She Undergo Plastic Surgery? [PHOTOS]

Pop singer Christina Aguilera, who looked visibly overweight in the season 3 of The Voice, has sparked off speculations of undergoing a plastic surgery after losing an extreme 80 pound of weight.

The 32-year-old singer returned to the season 5 of The Voice after taking a break. She looks fresh and stunning with a perfect figure unlike the previous seasons.

Doctors are of the opinion that Christina Aguilera might have achieved an extreme 80 pound weight loss through drastic diet and plastic surgery, according to Radar Online. The doctors, who shared their views on the singer's weight to the website, have not treated the singer.

"I think she was 165 to 170 and now is a perfect 110 to 115," Dr. Fred Pescatore told Radar Online. "The only surgery she may have had is a breast lift because if you notice, they reduced in size perfectly which could happen but is unlikely."

Beverly Hills plastic surgeon Dr. Lance Wyatt told the website that extreme weight loss is possible in a year.

"In 10 months, patients may lose up to as much as 80 lbs or more with aggressive diet, exercise, diet pills, and/or bariatric surgery," he said. "Looks like Christina may have had liposuction of her body and/or tummy tuck for flatter abdomen and more narrow waistline. Her face seems a little thinner but not much, again probably weight loss by natural or surgical means."

Meanwhile, Aguilera has said that her priority is her family and not workouts.

"If I have to choose between working out and spending time with my son after a hard day, it's not even a question," said Aguilera in the November issue of Redbook.

However, a close to the singer told Life & Style magazine Christina stopped eating out and barely went out for three months after she was determined to lose weight.