Kate Middleton, the Duchess of Cambridge, has undergone her fair share of physical changes from the time she started dating Prince William to now. All of them have been subtle, but perhaps none quite as undetectable as her eyebrow evolution. Sounds silly, I know, but the Duchess' eyebrows are a defining feature of hers, and over the years, they have changed shape quite a bit -- but not so much that it's really obvious.
Check out Kate Middleton's eyebrow evolution. And don't be surprised if you suddenly have the urge to break out your tweezers.
Images via Splash