Legendary rocker Ozzy Osbourne has become the first heavy metal artist to see his merchandise pass the $50m (€41m) mark.
The ex-Black Sabbath singer and reality TV star's goods - including T-shirts and action figures - have made $35m (€29m) from concert sales alone.
And Ozzy's wife and manager Sharon Osbourne thinks his popularity will continue to soar.
She says: "I think the 'Ozzy for President' and the 'Passion of Ozzy' shirts we just released will be some of the best-selling and most popular among his fans.
"Of course, I love Ozzy so much I sleep with one of his shirts on every night."