Ron Galella The world's greatetest paparazzo
Really a wonderful portrait photographer and top rank photojournalist rather than paparazzi. Such wonderful photos and so tough to pull off in the circumstances. Buy all his books.
I have compiled a list of those who I consider to be the world's greatest photographers with links where possible to their websites: http://www.edwardolive.info/mejores_fotografos_del_mundo_top_10_bodas_moda_retratos_boda_inspiracion.php