GRASS IS GREENER: Nylon celebrated its annual August denim issue with a dinner hosted by cover girl Ashley Greene and editor in chief Marvin Scott Jarrett at Chateau Marmont Tuesday evening where guests included Chord Overstreet, Cameron Silver, Jeremy Scott and Rosson Crow. “Ashley was great to work with one-on-one,” said Jarrett, who previously shot Greene alongside Vanessa Hudgens and Portia Doubleday for the magazine’s Young Hollywood issue in 2010. A Pucci-clad Greene, who next stars in the supernatural thriller “The Apparition,” reminisced about finishing the “Twilight” films, saying, “It was a little sad and reflective knowing we weren’t going to come back to film — but exciting to finish something we had all been working on for four years.” Greene, who often dons Donna Karan on the red carpet, said the designer is currently creating something special for her. For the “Breaking Dawn” finale, perhaps?