Sisters that slay together, stay together! Kendall Jenner and Kim Kardashian were spotted out and about in NYC on Tuesday, September 10, dressed to the nines. The 23-old-model flaunted her killer legs in a semi-sheer minidress, while the Skims founder, 38, opted for leather pants and metallic top. Scroll through the gallery below to see all of the fashionable photos.