The first official picture of Katie Leung, who plays Cho Chang in the fourth Potter film, has been released.
In the film Harry has a crush on the Ravenclaw Seeker, and asks her to go to the Yule Ball with him.
It's 17-year-old Katie's first acting role. She beat 5,000 girls to the role when she auditioned at an open casting call in February 2004.
She only decided to go to the casting call when her father saw an advert for it on a Chinese TV Channel.
After a series of auditions Katie eventually won the part of Cho Chang in the movie.
Katie, who plays the piano, is a huge music fan and listens to all kinds of music including R & B, Pop, Rock and Hip Hop.
She's not the only new actor in Goblet of Fire.
Robert Pattinson plays Cedric. Stanislav Ianevski plays Viktor and Clemence Poesy plays Fleur.