Believe it or not, Kourtney Kardashian and Travis Barker's son Rocky is already 2! "Happy Birthday my Rocky 13 🖤. You're such a special soul, and you make every day brighter. I love you," Barker, 49, wrote via Instagram on Saturday, November 1. "No one's cooler. Guitars, drums, pirates, boom boom pow and Angus Young forever 🎸🥁🏴☠️ 🥊." Kourtney, 46, commented on the post with a holding-back-tears emoji while her mom, Kris Jenner, added drum emojis. Kourtney's sister and Rocky's aunt Khloé Kardashian also wrote: "Happy birthday to the cutest!!!!! Rocky!!!!!!! 🩵🩵🩵.