ZAC’S SECRET CODE: All over Manhattan designers are calling in their own special forces – whatever those might be – to get things done in time for their respective shows. Zac Posen called upon a budding brain trust for his Zac Zac Posen collection. This morning’s crowd at the Industria Superstudio show will include girls from Google’s initiative Made with Code. But they will be more than first-time showgoers; they coded the LED design on the bodice of the black dress that the designer used to close his show. Tech-savvy Coco Rocha (whose debut book last fall called for 1,000 poses shot with a geodesic dome) was more than happy to do the honors. Afterwards, Maddy Maxey (the project’s creative technologist and a Made with Code mentor) will be under the spotlight. After the show, she and the Made with Code girls joined other show guests at a reception celebrating the partnership with Posen and giving attendees a chance to try their hand at coding. The Google program aims to encourage millions of girls to get into coding in advance of the prediction that by the time middle schoolers go to college, there will be one million more computer science jobs than computer scientists to take those posts.

New York City Mayor Bill de Blasio’s wife Chirlane McCray was front-and-center at Posen’s show, which was New York Fashion Week’s spring/summer 2016’s official launch. McCray made an opening day appearance at the New York shows for the second consecutive season. She said Tuesday’s outing was driven by the fact that she is “interested in learning about technology.” The outing also gave McCray a little quality time with her daughter Chiara de Blasio.

Former “Dancing With The Stars” contender Rumer Willis also turned up at Posen’s show. She has been busy practicing her kicks for another show – her September 21 Broadway debut in “Chicago.” Asked if she is jealous of her ex-DWTS partner Val Chmerkovskiy’s new sidekick Tamar Braxton, Willis said, “No, I am excited to see it without being in the hot seat.”