In Hollywood it’s not as easy as “sexy school girl or bad teacher” when it comes to choosing your go-to Halloween costume. Creativity is key, which means ghosts or witches need not apply. Besides, you can’t dress as Nicki Minaj when you are Nicki Minaj! Looking for a little inspiration? Hit the flip for rolling out’s 10 favorite celeb Halloween costumes of all time below. – ruthie hawkins/@ruubabie