WATCH: Little girl takes her party guest list VERY seriously

Baby Mia was literally born yesterday, but according to her older cousin Sierra, that’s absolutely no excuse for missing the birthday party of the century. Watch Sierra wrap her head around the news that Mia might need a rain-check this time around… and the revelation that there’s another birthday NEXT YEAR! https://www.youtube.com/watch?v=AfeaCbwI2U4