ART PARTNERS: Dia Art Foundation has a new luxury partner. The nonprofit organization has joined forces with Chanel ahead of the Dia Beacon gallery’s annual Spring Benefit luncheon, to be held Saturday in upstate New York in tandem with New York Art Week. The French fashion house will also support the foundation’s fall gala in New York City. “Through this partnership, Chanel and Dia affirm a shared vision: placing artists at the center, supporting ambitious artistic practices and nurturing long-term cultural impact,” Chanel said in a statement shared exclusively with WWD. This follows Dia’s previous partnership with Bottega Veneta , which encompassed Matthieu Blazy ’s tenure as creative director of the Italian label. Having taken over as artistic director of fashion activities at Chanel last year, Blazy was keen to build on the relationship.…