Part I: Shannen Doherty asks for privacy for her former '90210' co-star while Giuliana reveals her most intimidating red carpet interview.
Part II: Giuliana and Shannen open up about their onscreen love lives.
Christina Aguilera calls in to say goodbye to her saucer hat from 'The Voice.'
Giuliana Rancic reveals the most annoying thing about Ryan Seacrest on PT5.
Shannen Doherty opens up about her early career issues.
Shannen Doherty dishes on Alyssa Milano and chokes Andy in a very memorable game of PT5.