Bristol Palin denied rumors that she has had plastic surgery, but told a celebrity magazine she underwent corrective jaw surgery for medical reasons.
The former "Dancing with the Stars" finalist and daughter of Tea Party favorite Sarah Palin sparked a media buzz over her new and more angular jaw line, when she was photographed at recent public events.
"It's not plastic surgery," Bristol Palin told Us Weekly in an issue that hit newsstands on Wednesday.
Palin, 20, the single mother of a 2 year-old boy who this week landed her own reality TV show, said she had corrective jaw surgery in December.
"It improved the way I look, but this surgery was necessary for medical reasons ... so my jaw and teeth could properly realign," she said.
But Palin also said she is "thrilled with the results" of the surgery. "I look older, more mature, and don't have as much of a chubby little baby face!," she said.
Sarah Palin, who was the U.S. Republican vice presidential candidate in 2008, is weighing a run for president in 2012 .