Mary-Kate Olsen, recently treated for an eating disorder, and her twin sister Ashley (search) are promoting McDonald's in France.

A Happy Meal campaign featuring the twins started Sept. 8 in the 1,035 McDonald's outlets in France, said a spokeswoman for the French division of the Oak Brook, Ill.-based fast-food giant. She refused to be quoted by name.

The meals come either with a photo album, a denim bag or a crayon box, she said. The album bears the twins' photo, and the bag and box bear their names, according to pictures on the McDonald's France Web site.

Mary-Kate was released in July from treatment for an eating disorder.