Erika Jayne Teases the Issue at the Forefont of the 'RHOBH' Season 8 Reunion (Exclusive)

ET sat down with the 'Pretty Mess' author to celebrate her book, plus get some 'Real Housewives of Beverly Hills' scoop, from what goes down at the just-taped reunion to the rest of the cast's 'conflict-ridden' trip to Berlin.