No it's not a teeth joke. Madonna will star in Gap commercials in a new multimillion dollar ad campaign beginning this fall. She will also use the venture to promote her children's book, "The English Roses," slated for a September release date.

Madonna doesn't lend her name and face to just anyone. The most notable product she endorsed was Pepsi back in 1989. The company dropped her after the controversial "Like a Prayer" video hit the air.

Time to sound off! Is 44-year-old Madonna a good fit for Gap?