Emma Watson has revealed that she became emotional after a number of fellow students asked for her autograph at Brown University.

The actress said that she told the group of boys that she would rather not sign because she just wants to be a student while she is there.

She told Vogue: "In the end I had a breakdown. Not a hissy fit, more like uncontrollable crying. Everyone looked at me horrified, like, 'Oh my God! What's wrong with her?' I just said, 'I'm really sorry, but I'm here to study and I just want to be a student. Would it be okay if I don't sign, because you'll be seeing me around all the time anyway?'"

The 20-year-old also admitted that she is amazed that nobody from the university has posted any pictures of her online.

She explained: "One morning I was walking down the corridor from the bathroom in just a towel and I thought I must be mad, anyone could take a picture up my towel and put it on Twitter.

"But no-one did. Not even when I had my birthday party - 100 people came and not one put a picture on Facebook."

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