Kylie Jenner/Snapchat

Happy 21st birthday, Kendall Jenner! The model celebrated her milestone birthday with dinner at Catch and afterparty at Delilah, both in Hollywood, on Wednesday, November 2 — and, of course, she didn't party alone. See what Kylie and Kris Jenner, Khloe and Kourtney Kardashian, and friends including Cindy Crawford and Kaia Gerber wore to the festivities!