Harry Potter star Emma Watson prepares for Oxford studies

Clutching books and dressed down in jeans, boots and an anorak, fellow students could be forgiving for not recognising the multi-millionaire actress and Burberry model.

The 21-year-old, known for her role as Harry Potter's friend Hermione, told fans they may not hear from her for a while as she prepared to knuckle down for some serious hard work at the ancient university this term.

Watson, who enrolled at America's Brown University, put her education on hold earlier this year as she focused on her acting career.

She is returning to her studies this autumn, at Oxford, before returning to Brown next year to complete her degree.

On her website, Watson wrote: "To Everyone who is starting a New School Year, (sorry those who have been at school for a while Oxford starts late).