The first iconic actress-as-character-as-actress I come to when I think of Halloween is Elvira, Mistress of the Dark.
She never got her boobies out in character, though, so here's a much brighter, shinier, more saturated Cassandra Peterson.
Emily Mortimer is just such a cupcake 🧁
And before the debate begins, she had confirmed in interviews that the bush is au naturel. No merkins involved.