Singer Beyonce Knowles has signed a $4.7 endorsement deal with L'Oreal. The five-year contract calls for her to work 10 days a year for photo shoots and to make promotional and personal appearances within that time.

L'Oreal has the option to extend those 10 days to 12 but will pay $25,000 a day for the extra time. Beyonce must keep her hair in "excellent condition" and notify the company if she plans to make "any radical change."