The craze for stickers seems to have declined in recent years. The only ones I ever see now are'princess on board' and 'a dog is not just for christmas'.
Mrs O, a single-edged razor blade and two minutes will have that off. Use a sawing action on one end to get enough sticker free to grip then pull gently but firmly off the window.
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.