Eighteen-year-old Emma Watson, who plays Hermione Granger in the Harry Potter films, has signed a two-year, $6 million contract to be the new face of Chanel’s Coco Mademoiselle perfume. “This is such a perfect fit for Emma,” a friend of the actress told MSNBC.com. “She’s not going to end up like these other Hollywood train wrecks. She just isn’t.”