Jessica Simpson: Under the Knife, Under Examination

Jessica Simpson isn't shy when it comes to talking about music. Or past relationship troubles.

She's not even afrai to coyly refer to how happy the relationship with John Mayer makes her. But don't bother to ask Crazy Joe Simpson's daughter about any rumored plastic surgery. She won't say a word.

That's why Us Weekly asked a few specialists to chime in with their thoughts ...

Eyes:
"The upper lids look elevated, giving her a more youthful appearance," New York City surgeon Geoffrey W. Tobias said speculating that Simpson opted for Botox injections or fat injections to lift her lids.

Nose:
"Her nose is narrower," says NYC plastic surgeon Zachary Gerut. Adds Tobias, "She could have had a little thinning of the nose while leaving the profile intact."

Perhaps she used the same doctor as her sister, Ashlee, and Jennifer Aniston.

Cheeks:
"Apple cheeks give the appearance of youth and beauty," says Tobias who suggests that Simpson's could be the result of midface injections of fat (taken from the patient's butt or stomach).

"One could say it might be a little overkill. The most important thing about all surgeries is that they should look secret."

Lips:
"I had that Restylane stuff," Simpson told Glamour last year. "But...my lips are back to what they were. Thank God!" Tobias thinks otherwise: "Her upper lip is a bit bloated, an effect of collagen or Restylane."

As compared to the lovely lips of Angelina Jolie, which are all natural.

Chin:
Pointing to some uneveness, Gerut said: "Her chin has some ripples, which can be caused by inappropriate Botox or an implant that didn't heal well - not necessarily the doctor's fault."