Actress Kristen Stewart says actors become "isolated" because of their fame.

The 24-year-old has become one of the biggest movie stars following her portrayal of Bella Swan in the "Twilight" franchise, in which she starred with her ex-boyfriend Robert Pattinson.

Although she loves her profession, Stewart believes she and other actors can get "lonely" because other people treat celebrities differently, reports femalefirst.co.uk.

"Actors become so isolated. It's like people aren't allowed to talk to us. Like if you're a big star, or whatever, if you're like a famous person, it's kind of lonely. Like people don't want to talk to you," she said.

Stewart has seen many of her professional peers form very close relationships with their assistants because they end up spending so much time together.

"I've seen people hire a friend. Literally, like, you hire someone. They're your assistant but then lines start to blur and now they're a co-worker, an associate, an employee, my friend, my sister, somebody that I'm attracted to," she said.