However, while shooting for a guest spot, the 23-year-old knew she had to make a change after repeatedly ignoring staffers who were trying to address her.
"I was 16 at the time, and I hadn't done anything yet, so I was like, 'I can be whatever I want to be. What name do I want to have?' So I went though a list of names and picked Riley," femalefirst.co.uk quoted Stone as saying.
"But then I had an identity crisis pretty much right after because everyone kept on yelling, 'Riley!' and I didn't know who they were talking to." "So I had to change my professional name to Emma, which my mum always called me," she said.
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing
Photos: Salman Khan, Daisy Shah spotted at the Mumbai airport
Photos: Rakhi Sawant to play Honeypreet in Ram Rahim biopic
Photos: Arvind Kejriwal asks Kamal Haasan to join politics
Photos: TV actress who played goddesses on the small screen