Tom Felton (Draco Malfoy), James Phelps and Oliver Phelps (the Weasley twins) attended the UK premiere of The Dark Knight.  Getty Images has some photos from the event, you can see them HERE (for Tom), HERE (for James and Oliver)!

Thanks SS!

UPDATE: Evanna Lynch and Jessie Cave(they call her Bonnie XD) were also in attendance!

UPDATE 2: They are also all in High Res thanks to Oclumencia! Sorry I took so long to add them, was at The Dark Knight. (what a coinkydink)