Renee Zellweger, a cherubic cutie with the trademark cheeks in 'Jerry Maguire' and 'Chicago,' looked utterly unrecognizable on the red carpet in Los Angeles on Monday night — and experts think the Oscar winner went under the knife.

Great Bridget Jones' Diary, what did she do to her face?!

Renee Zellweger, a cherubic cutie with the trademark cheeks in “Jerry Maguire” and "Chicago," looked utterly unrecognizable on the red carpet in Los Angeles on Monday night — and experts think the Oscar winner went under the knife.

But no one is exactly sure which part of her was remade.

"The extra hooded skin on her eyes isn't there anymore," said Dr. Robert Guida, a plastic surgeon on Park Ave., who added that the actress likely got Botox and fillers in her face.

"There is no question she has had her upper eyelids done," Dr. Thomas Sterry, a Manhattan plastic surgeon told the Daily News. "She always had that cherub-y face, and suddenly ... her eyes (are) much wider."

Dr. Victoria Karlinsky, a cosmetic surgeon on the Upper West Side, speculated that the 45-year-old actress got a nose job to remake her face from perky to steely.

"The bridge of her nose has become more narrow," she said.

The buzz from Park Ave. to Sunset Boulevard began on Monday night at Elle Magazine's annual Women In Hollywood party presented by REAL Calvin Klein — where people “almost didn’t recognize” the former “It Girl” on the red carpet, said a source who was at the event.

"When people got up close to her, they were taken back by what she had done to her face," the source said. “Everyone was whispering about how different she looked.”

But in the court of public opinion, the jury is still out on whether Zellweger had gotten a lift from her alleged lift.

"She's probably having a mid-career crisis!" said Fahra Simon, a 28-year-old health specialist, slamming the new look. "A lot of celebrities are trying to keep up with the younger generation, the Kim K's.