You may not have noticed it at all, but some eagle-eyed royal watchers have spotted something a little strange about Prince William and Kate Middleton that has many people questioning their marriage.
Regularly spotted together, William and Kate are often photographed standing or sitting side by side. By all means, they look like a happily married couple, but there is something that just doesn't add up.
Social media users noticed a trend in several photos of the couple - the Duchess of Cambridge proudly wears here huge engagement ring and subtle wedding band, yet the Duke's wedding ring is missing.
Do you know why? Check your answer on the next page!