Looking for an outer-this-world adults alien costume for your costume or Halloween party? We’ve got you covered! From classic green alien costumes to cute alien costumes for women, complete with antennae and bright, shimmery dresses, there’s something for everyone. Alien abduction costumes (also known as inflatable alien costumes!) always cause a good laugh so are a great option if you’re looking for a funny alien costume! You can never be too extra (terrestrial), so don’t forget to add some alien eyes to your marvellous Martian costume.