The feud between Joanna Krupa and Brandi Glanville is getting serious. Krupa has hired a lawyer with plans to sue Glanville for “slander, libel, defamation and/or intentional infliction of emotional distress” over past claims Glanville has made about the supermodel’s alleged affair with affair with Mohamed Hadid. E! News has obtained a letter sent to Glanville by Krupa’s attorney Raymond Rafool.