The joke's on Halle

Halle Berry had to hold herself together after laughing so much at being the subject of a practical joke during the world premiere of her film Gothika.

The Oscar-winning actress was told that she would not be allowed into the cinema because it was full.

But it turned out to be an elaborate hoax by Demi Moore's boyfriend Ashton Kutcher, who plays practical jokes on fellow celebrities for his MTV show, Punk'd.

The 37-year-old actress, who plays a psychiatrist in the film, was also joined at the screening by co-star Penèlope Cruz.