UNIFORMLY SPEAKING: Sky, the largest luxury rental building in the U.S. that will open in March at 605 West 42nd Street, has selected Theory to outfit its concierge, doorman and front desk staff. Female staff members can choose to wear the Gabe blazer in navy blue, paired with the Testra pant or pencil skirt or Betty dress. Male staff members can wear the Wellar men’s blazer, Marlo pant or Haydin pant. The front desk staff will wear navy and the doorman will wear charcoal. The luxury building, being developed by Moinian Group, will employ 40 people — 80 percent male, 20 percent female — who will all be outfitted in Theory.