Kourtney Kardashian has a new BFF and her name is Addison Rae! The 19-year-old social media sensation is something of a TikTok queen, who has been posting a number of clips and even appears in a few of Kourtney’s TikTok videos, recreating some iconic moments from Keeping Up With The Kardashians. So who is this young phenom taking social media by storm? Here are five things you should know about Addison Rae!