The actress is idolised by millions of teens around the world thanks to her role in the Twilight franchise, but she has long insisted her overzealous devotees make her feel uncomfortable.
However, Stewart reveals she became an emotional mess upon meeting singer-songwriter Jenny Lewis - and now understands what her followers go through.
She tells Britain's Glamour magazine, ""There definitely are people that kind of lose it and get very emotional. But recently, I met Jenny Lewis and I had the most ridiculous experience. It was so embarrassing. I couldn't speak. It was eye-opening, actually - I'm sure that (fans) leave and find themselves going. 'It's the one time I'm probably ever going to get a chance to meet this chick, and God, I couldn't even f**king speak'.""