'Horrid Henry'

Cast member and British pop group Girls Aloud's Kimberley Walsh (C) arrives with her group members Sarah Harding (L) and Nicola Roberts for the world premiere of the first British movie for children to be filmed in 3D, 'Horrid Henry: The Movie' at BFI (British Film Institute) Southbank in London on July 24, 2011. (AP/Akira Suemori)

Sarah Harding poses for a photo while meeting with fans as she arrives at the premiere of the film,'Horrid Henry', in central London on July 24, 2011. (AFP/Max Nash)

Nicola Roberts from the group 'Girls Aloud' meets with fans as she arrives at the premiere of the film,' Horrid Henry', in central London on July 24, 2011. (AFP/Max Nash)

Ross Marron (L), Theo Stevenson (centre) and Scarlett Stitt, the three main actors in 'Horrid Henry', pose for photos at the premiere of the film in central London on July 24, 2011. (AFP/Max Nash)

Sarah Harding from the group 'Girls Aloud' poses for a photo with a fan as she arrives at the premiere of the film,' Horrid Henry', in central London on July 24, 2011. (AFP/Max Nash)

Kimberley Walsh (C) Nicola Roberts (R) and Sarah Harding (L) at the premiere of 'Horrid Henry' in central London on July 24, 2011. (AFP/Max Nash)

Kimberley Walsh (C), Sarah Harding (L)and Nicola Roberts (R) at the premiere of 'Horrid Henry in London on July 24, 2011. (AFP/Max Nash)

Cast member and actor Ross Marron arrives for the world premiere of the first British movie for children filmed in 3D, 'Horrid Henry: The Movie' at BFI (British Film Institute) Southbank in London on July 24, 2011. (AP/Akira Suemori)

Theo Stevenson, one of the main actors in 'Horrid Henry', jokes with fans as he arrives at the premiere of the film in central London on July 24, 2011. (AFP/Max Nash)

Cast members Richard McCourt, left, and Dominic Wood of duo Dick & Dom arrive for the world premiere of the first British movie for children to be filmed in 3D, 'Horrid Henry: The Movie' at BFI (British Film Institute) Southbank in London. (AP/Akira Suemori)