Get original full sized movie art cover from iTunes

In iTunes type in the name of the movie art work you are looking for in the search box. Once you found it and clicked on the desired movie, right-click on the picture of the movie and select 'copy link'. Now paste that link into your web browser's address bar. Right-click on the movie picture and select 'view image'. Look at the link the browser's address bar and delete the numbers before .jpg. For example if the link is ..._1400x2100.227x227-75.jpg then delete .227x227-75 and press enter. Now you should get the full resolution movie art cover.