I'm a huge Girls Aloud fan and one of the best sites out there is called Girls Aloud Media. It is a SUPERB site - the mecca of all things GA. Truly a magnficient site run by the dynamic Hayley.
I do enjoy this site a great deal which has everything from up to the minute news, pictures, videos...EVERYTHING.
I've added Girls Aloud Media to the AUSXIP Affiliate / Favourite links section.
Hayley also has a mega video site dedicated to Girls Aloud - another superb site.
In addition to all of that Hayley has a Girls Aloud Forum