The latest patch for The Sims 4, released today (1st December), has made updates related to aliens.
1. You can now set your alien Sims’ disguise in CAS without having to go into Live Mode and choosing the “Alter Disguise” interaction.
2. There is a new icon alongside your Sims’ traits to indicate they are an alien.
3. There is a new plumbob in Live Mode specially for aliens.