This illustration shows, generally, what both sides of the great debate are seeing. Photo illustration by Slate. Read more of Slate’s very comprehensive coverage of The Dress. In the beginning ...

NEW YORK (CBSNewYork/AP) --It's the dress that's beating the Internet black and blue. Or should that be gold and white? Friends and co-workers worldwide are debating the true hues of a royal blue ...

This year, Kate Middleton wore an elegant royal-blue coat. Each Christmas Day ... Underneath, Kate appeared to pair the coat with a high-necked black dress, along with a small maroon clutch ...

Rules are rules—and this one's a biggie! Here's why royal family members always pack a black dress or suit when traveling.