Are you ready to experience some of our most talked about celebrity engagement rings? These aren't for the faint of heart. Some are massive, some traditional, some nontraditional — all are Fab. From newly engaged stars such as Hilary Duff and Katy Perry to others like Demi Moore and Ali Larter who have since added new members to their families, these rocks are not-to-be-missed. Which one is your fave? Me? I'd have to go with Nicole's art deco-inspired ring from fiance Joel Madden. Proceed for more celebrity engagement rings.