Katie Couric sexed up her
Talk Show Monday in honor of Erika Leonard, a.k.a. Fifty Shades of Grey author E L James, and not just with sensual crimson lighting. Couric herself drew cheers when she appeared at the top of the hour in a sleeveless black leather dress and sky-high stilettos - to
Rihanna's "S&M," obvi. "Relax - this won't hurt at all," the host joked, introducing herself as our "mistress" for the day ... we should be so lucky. As ...