Hilary and Haylie Duff have signed on to star in Material Girls, a big-screen comedy inspired by Madonna's same-titled '80s anthem. Per Variety, the sisters Duff will play a pair of celebutante cosmetics heiresses who lose their fortune in a corporate scandal and set out to find the culprit. Hilary will record a cover of "Material Girl" for the pic's soundtrack. Meanwhile, I can't believe J.J. Abrams killed off Boone! Sorry, folks, it's a rough morning for me.