Arthur: According to The Hollywood Reporter, Madonna will head the voice cast of the big-budget CGI-animated Arthur, directed by Luc Besson, which the director's Europa Corp. also is producing, sources close to the movie confirmed Thursday.

Arthur is adapted from a series of children's books written by Besson, who also wrote the screenplay for the movie. Ten-year-old Arthur, in a bid to save his grandfather's house from developers, goes in search of treasure hidden in the land of the Minimoys, a tiny people living in harmony with nature.

The film, scheduled for a 2006 release, will include some live-action sequences. The 3-D animation is being crafted by French specialist Buf Compagnie. Madonna is understood to be voicing the part of Princess Selenia, a character who travels with Arthur to a mysterious forbidden city where an evil being dwells.