VERA GETS HER WANG ON IN HER NEW VERA WANG SOHO BOUTIQUE.

“It’s a movable feast.”

That’s how Vera Wang ebulliently described her first ready-to-wear store in SoHo Tuesday.

Designed by Gabellini Sheppard Associates LLP, the two-level, all-white boutique has a bevy of interchangeable features made from varying textures — sliding partitions, shell-like hang bars, translucent shelving, scrims, neoprene-covered furniture and stackable mini gym mats — that make for a dramatic space of extreme proportions, which are indicative of Wang’s rtw and how she works in her design studio.

Shoppers will be free to roam Friday in the airy 2,500-square-foot space at 158 Mercer St., the first of its kind to showcase the designer’s rtw and Lavender collections, including shoes, jewelry, sunglasses, handbags and her brand-new Look fragrance. Jacket-and-skirt combos, as well as little short dresses and jewelry should be key sellers in the store, she said.

“I have waited a long time for this,” Wang said. “This was not a sudden decision. I opened my last store in 1989. I have waited 19 years for this, so it means a lot to me, not just from a business point of view but from an emotional point of view. I found this space and held onto it for two years because I couldn’t decide on an architect and I wasn’t about to rush.”