"Hey there, you fierce and fabulous Khloé Kardashian! Can you believe it's already your 40th birthday today? Time sure does fly when you're living your best life. Wishing you all the love, success, and happiness on this milestone birthday and beyond. May you continue to slay and inspire us all. Happy birthday, queen!" P.S. Please save some birthday cake for us, we'll be there in spirit. Cheers to being the hottest 40-year-old on the block!