Bristol Palin used to have a sweet rounded face, and now photos are showing a bad version of Jennifer Love Hewitt with a super sharp chin.

There’s speculation she’s had a chin implant, but a source close to Momma Sarah Palin sez no way little Bris would put a knife to her face, and diet and exercise has reshaped her eldest daughter’s face. At least one platic surgeon, Dr. Brian Glatt, board-certified in New Jersey, has weighed in telling E!Online:

She’s lost a little volume in her cheeks from weight loss, which you’d expect in someone young, but the lower third of her face is a dramatic difference. You could draw a line across the lower third, it’s like two different people.

I’m no expert–though I look at lots of picture of facial surgery–but you can get those results from neck lipo, which is technically not plastic surgery. It’s uh…facial re-conturing. And I might debate a chin implant, which is real “plastic” surgery; a chunk of silicone is placed beneath the periosteum, or “bone skin.” Um, ouch.

I  have no issue with discreet nips, tucks, lifts, implants and so forth, but this is such a radical change–and at such a young age–that it’s creepy and weird. Especially because full lenght shots of Bristol don’t show much of a change in her body. I wonder what the formerly wholesome looking Candies Foundation abstinence spokesgal will look like in a couple years….Time will tell.