Former reality star Heidi Montag says her persona on MTV's "The Hills" and the infamy she earned from getting ten plastic surgery procedures in one day have made her a prisoner to her fame.

In an interview with Celebuzz.com, Montag says she and husband Spencer Pratt did not realize what they were doing when they were chasing fame on the MTV reality show.

"I'll never be able to be Heidi Montag, a normal person, again," she told Celebuzz. "What [I've] done is something that you can't undo and that's what I didn't realize. It's a very different life. It's like a lifelong sentence."

She added, "I've been...getting re-grounded and getting back to a normal life and figuring out what my goals and aspirations are. [Spencer and I] are not those people on The Hills anymore. We never were. It was more an acting role than anything else. But we played those character and when you start playing a character you kind of start to become more of a character."