The French Man
The classic French fancy dress idea is a striped top, beret, and a chain of garlic round the neck. You could bling this up with as pack of Gauloise, a bottle of red plonk and a baguette.
Pepe le Pew
Go dressed in a skunk costume and tell everyone that you are Pepe Le Pew. This is a great excuse for speaking in a sexy french accent and making passes at women. If they rebuff your advanced just tell them that you were just staying in character.
A french maid outfit is a great french fancy dress idea for a woman. Think of the characters in the BBC comedy Allo! Allo!.
A long trench coat, beret and sunglasses make for a convincing french resistance fancy dress costume.
Asterix Fancy Dress
Asterix was a cartoon set in Gaul which is now France. It makes for a great funny fancy dress idea. For any of the characters, such as Asterix or Obelix, you need to go for a horned helmet, big moustache and striped trousers and braces. Throw in a toy sword and shield to complete the look.