Move over Ryanair, there's an airline with its sights set on taking the title for the most cunning ways to bump up the price of a ticket.

Air France KLM has hit on the cunning rouse of charging obese people extra, by making them buy a second seat on the plane.

From April 1, they will generously give them a 25% discount, but will demand the overweight buy an extra seat. They say anyone refusing to buy two seats will be turned away at the plane door.

This isn't the first time the airline has had a bash at this. In 2007 they charged a passenger as he got on the plane. In that instance they were taken to court and the judge ruled they couldn't do it, because the rule wasn't in the small print.

Now they are changing the small print, and fatties will have to pay up.

Is this fair?