“Dior and I” refers to the connection between 47-year-old Raf Simons and the late, master designer, which the film reveals through narrated segments from his 1956 memoir, “Christian Dior & I.” The parallels are many. Both men share a preference for the quiet company of a few trusted friends. Both ponder their outward persona versus their true selves. Both fret about dealing with the press. Raf Simons is the Belgian fashion designer, who took over in 2012 as creative director at the venerated house of Christian Dior, and was tasked with putting together his first-ever haute couture show in just eight weeks, an enormous undertaking which usually requires five or six months. “Dior and I” intimately demonstrates the tricky balance between art and commerce, between perpetuating a mythology while attending to the bottom line, and doing it with the pressure of a ticking clock. As one of Simons’ top lieutenants, do you make sure your gowns are ready in time for the collection, or do you jet from Paris to New York for a fitting with a client who spends hundreds of thousands of dollars each year to update her wardrobe?