The idea of a proposal always presents never-ending excitement, but there's one caveat that makes saying yes even more daunting - the engagement ring itself. Just like your future spouse, you'll be wearing your engagement ring for life, so it should be unique, and one that you'll love not just in the moment, but for years to come. While we love classic rings like the single diamond set on a simple gold band, weddings have taken a refreshing, innovative turn in recent years, so the romantic accessory that you're saying yes to should match. Some of the most stylish celebrity engagement rings have successfully broken the mold. Perhaps your mind goes to Kate Middleton's iconic 12-carat ring that was surrounded by 14 diamonds and set on 18-karat white gold, originally owned by Princess Diana, or even Beyoncé's 24-carat emerald-cut diamond ring , set on a split band designed by Hollywood-favorite jeweler Lorraine Schwartz. More recently, Megan Fox's custom toi...