New York Fashion Week’s fifth evening was a big night for Jason Wu. The famed designer celebrated the first anniversary of Grey Jason Wu, his expansion into off-duty, cool-girl staples, following his presentation of the sister line on Monday. But that’s not all: Jason also launched his takeover of downtown event space Cadillac House for #GreyOut, the newest pop-up fashion girls will be hitting up this season. Running until September 24, the shop will feature limited-edition collaborations with fellow creatives like Deborah Lippmann, Edie Parker and Jennifer Fisher—all in the monochromatic hue he created in partnership with the Pantone Color Institute. For more post-NYFW fun, a series of curated events will include a beauty bar, art sessions and fitness classes. Quick, RSVP for them here—they’ll fill up stat.