Just make sure your look is scary or from a horror film (don’t get us started on wearing any old fancy dress – being a cat, duh, will just about pass, but Elsa from Frozen is a no-go).

And not just fancy, fancy stuff ... to the Olivia Rodrigo concert and Birdie wore a Betsey Johnson dress of mine from the ‘90s and here it is," Philipps said while showing side-by-side photos ...