There has been tons of speculation surrounding Bristol Palin lately, mostly wonderings as to whether the 20 year old had plastic surgery.

The single mother has been photographed since the end of April looking substantially different than we all remember.

At first Palin kept her mouth shut, allowing rumors to run wild, but the folks over at US Weekly got the real scoop straight from the horse’s mouth!

Surgery at 20? You betcha!

Bristol Palin caused a major stir April 30 in Washington, D.C. at an afterparty for the White House Correspondents Association dinner: Debuting not just a slimmed-down bod and stylish new ‘do but a distinctly more angled jaw and sharpened chin.

And the young mom, Dancing with the Stars alum and daughter of political superstar Sarah Palin knew what everyone was thinking. “It’s not plastic surgery,” she tells Us Weekly exclusively in the new issue, out Wednesday.

She explains: “I had corrective jaw surgery” back in December 2010, says the new Bio channel reality star, who has a 2-year-old son, Tripp, with ex-fiance Levi Johnston.

“Yes,” she admits, “It improved the way I look, but this surgery was necessary for medical reasons…so my jaw and teeth could properly realign…I don’t obsess over my face”

Still, “I am absolutely thrilled with the results,” she gushes. “I look older, more mature, and don’t have as much of a chubby little baby face!”

Personally, I think the surgery greatly improved her looks. And I’m against most plastic surgery, especially when it comes to facial changes. We’ve all seen what happened to the likes of Courtney Love and Michael Jackson.

You’ve got to be careful with your face, cuz one wrong move…

So what do you guys think? Doesn’t she look great!?