Pop icon Madonna has reportedly been ousted from a magazine cover by Ashlee Simpson.

The MUSIC singer is preparing to embark on a press tour for her upcoming album CONFESSIONS ON A DANCEFLOOR, and sources say she was supposed to pose on the cover of Blender magazine's December (05) issue.

But publishing bosses have now dropped her in favour of Simpson.

A source says, "Madonna was fuming. She never wanted to do Blender in the first place; she wanted to do Rolling Stone. And then this put her over the edge."

While bosses at the publication have refused to comment, Madonna's representative says, "She's too busy healing from her (horse-riding) accident.

"I was talking to several publications, including Blender. Trust me, you'll see plenty of Madonna in the weeks to come."