Letter sent by Heleen (the Netherlands). Look at the stamps! Tom & Jerry were among my favourite cartoons during my childhood (and still!). By the way, they are very popular in Morocco too. And I also used to like The Flintstones. I am afraid I am too old for appreciating The Powerpuff Girls and the rest, but I really like the idea of matching children illustration with post world.
By the way, don't you think that the Queen looks somehow odd on this envelope?