The page hadn’t yet turned on December when Barneys New York rang in its holiday campaign in Beverly Hills on Thursday evening. The event, at its flagship on Wilshire Boulevard, celebrated its collaboration with Simon and Nikolai Haas and the campaign Haas for the Holidays. It also marked Barneys’ first holiday launch event on the West Coast. The soiree brought out a good chunk of industry movers and shakers, including Devendra Banhart, Tallulah Willis, Greg Chait, Justin Kern, Juan Carlos Obando and Sophia Amoruso to help Barneys creative director Matthew Mazzucca and the Haas brothers celebrate the holiday windows and broader campaign. “The message is that life comes in waves, obviously, and not to fight them. It’s setting a positive view and that’s in line with everything else,” Simon Haas said of the windows as he pointed to sayings leading up the staircase within the store, such as “Love Heels All Wounds” and “Sun body Loves You.” “The idea for the holidays,” Simon continued about the work he and his brother did for the Barneys windows, “was instead of being a snowy, Christmas theme is being what holidays are, which is about positivity and giving and sharing.” Haas Brothers, the Los Angeles art and design company the two started, is working on Design Miami, followed by a show at the Bass Museum of Art in Miami next year. Barneys decked out the Beverly Hills out with different elements of the Haas Brothers campaign, from a photo booth area to an on-site screen-printing station for guests to create their own T-shirts. So why the push now for the holidays on the West Coast? Mazzucca’s new role as creative director — the windows were his first as Barneys creative director, although not his first for the retailer — is a part of that answer. With Mazzucca in his new position, the goal is about making each store unique to the locale it’s in and, given the Haas brothers hail from L.A., doing something locally made sense, he added. “One thing that we always talked about is that there’s not a really strong window culture [in Los Angeles] like there is in New York. There is a culture of windows, but you don’t have pedestrian traffic like you do in New York so I looked