Which starlet just debuted her 5 carat sparkler?

Sean Kilpatrick/The Canadian Press/AP

Carrie Underwood gained some weight this holiday season in the form a of massive new rock. Her boyfriend of one year, Canadian hockey star Mike Fisher, recently proposed with a 5-plus-carat round yellow diamond engagement ring by Jonathon Arndt. The sparkler is set in platinum, surrounded by pave diamonds, and is estimated to be worth 1.5 million. And you can barely tell where the Titanic hit it.