Of all the people not to upset at last night’s BRIT Awards, one of them must have been Madonna – one of the biggest stars in the world – during her big comeback performance. Tabloid in long-form, Anger details the scandals of Tinseltown’s very first stars (including Rudolph Valentino, Roscoe Arbuckle, and Clara Bow) against the backdrop of a city charged by rampant debauchery and high glamour. Whereas Hollywood Babylon deals mostly with the era’s nightlife, the workday habits of early film stars were pretty wild too. For our purposes, it’s all about the prep. Hence a little history lesson today, particularly…