This year, you can have yourself a merry little Gaga Christmas. The pop star and Barneys are collaborating on a “multifaceted holiday campaign” that will include Gaga’s Workshop, filled with limited-edition gifts, like lipsticks in Gaga hues, jewelry made of rock candy, and lip-shaped dark chocolate. [WWD] The Christian Louboutin and Yves Saint Laurent red shoe battle continues. After the judge denied Louboutin’s request to stop the sales of YSL’s red-soled shoes last week, the designer...