It's interesting, because we all can (and do!) differ about whether a certain color is good or not, a certain style of dress or hat, a certain hairstyle, etc., and there are as many differing opinions as there are numbers of us, but the eyeliner issue is one that many, if not most, of us agree upon.
I pay attention to the make up trends of entertainment industry celebrities and, while heavy eyeliner seems always to be in style, the liquid "art liner" types seem not to be used so much anymore. They have given way to smoky, softened pencil or powdered liners. It surprises me that Kate and her sister/Mom have not at least tried these more on-trend looks, which are far more flattering. In an otherwise perfect wedding with a perfect dress, the eyeliner harshened some of her close-ups and I shudder to think how it would have looked in person...
Just one woman's opinion!