I find the concept of 'celebrities' a very strange concept. For me, a celebrity should be someone celebrated for the actions they have done, preferably ones that have helped people. My concept of them would be the likes of authors, philosophers, scientists, artists, etc who are well known to most people, but have very awe inspiring content. I think it's very strange that most 'celebrities' haven't really contributed much to society in a beneficial way (except for entertaining some people).
Although, if I had to choose it would be:
-The British Royal Family
-The Janoskians
-The Kardashians
-Simon Cowell
-Nicki Minaj
-Cheryl Cole
-Katie Price
...and many MANY more.