usa star US Celebrities

Title of usa star to star can add s? Can I add an "s" to my title, "US Star"?  Yes.  However, the people you mentioned are not stars.  They are just well known people.  However you can say they are stars in their field of music.  A "star" here means they are actresses, movie stars that is.

I love usa,and usa star, the US and its celebrities such as Avril Lavigne, Lady Gaga, Katy Perry and Britney Spears.  I do not konw the right way to write properly.  Recently revisited I saw an old film movie, "Cry".  (call Cry), I especially like this kind of movies.