So, if you didn't already know, it was Kendall Jenner's 21st birthday last night. That means a slew of stylish celebs showed up to celebrate, and they all brought their fashion A-game. Aside from the birthday girl herself, one of our favorite looks by far was actually a double look from a supermodel mom-and-daughter duo. We're talking about Kaia Gerber and Cindy Crawford, of course. We've shared many times how much we love when these two are twinning, so we definitely wouldn't want to miss out on their latest and greatest. For the occasion, thr pair coordinated both in colors and textures. Crawford opted for a metallic blazer on top with black leather pants and heels, and Gerber went for a gray crop top, a black lace-up skirt, and patent leather boots from Kenneth Cole. All in all, these two made for one seriously stylish pair.