The 20-year-old Harry Potter star told British newspaper Metro, "The funny thing is people look at me and go, 'Is that the girl from Harry Potter?' And then they shake their heads and say: 'No, it can't be, she's on public transport.' And I'm sat there secretly thinking, 'Ha Ha that's funny.'"
Emma, who studies at Brown University in the US, admitted she doesn't know what to do with the millions of dollars she earned from the Harry Potter movies.
"I have way too much money to know what to do with it," she said. "I bought a laptop, and a Toyota Prius when I passed my driving test, but that's the most expensive things I've spent my money on outside my education."