Girlfriend of Arsenal star Walcott lands role in Harry Potter film
The Sunday Mirror says Mel, 20, appears with Daniel Radcliffe and Emma Watson in Harry Potter and the Deathly Hallows: Part One.
In the movie, set for release in November 2010, Mel plays a pal of Hermione (Watson) as they watch a game of Quidditch - and she even gets to say some lines.
Delighted Mel, studying for a degree in physiotherapy in London, said: "I had a couple of lines to say. I'd love to do more acting in the future."