It had more than a hint of blue, thanks to the formal robe she wore.

So, did she change outfits for the picture?

It definitely has some on Twitter confused.

Catherine, Princess of Wales and William, Prince of Wales smiling at each other

Onewrote: “The neckline is 200% different than the neckline on the day.”

Though not all royal fans are convinced, withonedisputing it was a cape.

Whether it was one dress or two, we don’t yet know for sure and may never know.

But we do appreciate getting a better look at the three-strand diamond necklace Kate wore.