What a friendship! Between them, Arnold Schwarzenegger and Franco Columbu own nine Mr. Olympia titles, but more importantly, they are firm friends. Arnold and Franco first met in 1965 in Germany and would come to the United States four years later. The pair started a bricklaying business together and Columbu would go on to be Arnold's best man when he got married in 1986.

Arnold took to Twitter to Mark The milestone with this post: