The 50s was all about teddy boys with their girl sidekicks in cute dresses rocking around the clock.
For women the a halterneck dress is great for a 50s theme party idea but can also be used as a dress more normal occasions.
Nothing quite says 50s fancy dress like a poodle skirt. It’s one of those skirts you see which billows out, is usually in a bold colour and has some sort of emblem designed on it. If you team this up with cardigan and set of pearls it will give you a great 50s look.
To get a good 50s hairstyle look for a woman you have to think soft and curly. Curling pins were really popular in this decade so if you want to have a really authentic looking fifties hairstyle maybe you can borrow your grandmas curlers.
Another popular haircut was the poodle cut made popular by Lucille Ball in I Love Lucy.