First up: Crown Princess Mette-Marit and Crown Princess Victoria and their twin appearances with, uh, themselves.
For the same same thing, you need look no further than the Mexican state visit to the United Kingdom a month earlier.
Mexico's first lady, Angélica Rivera de Peña, sported Mette-Marit's Alexander McQueen coat first. It's an A-line crepe coat in ivory with a double lapel detail, and the only surprising thing about this is that one of the British royal McQueen fans didn't beat both ladies to it. (Perhaps they will join the party later on. I'd love to see this one belted, just to shake it up.) Unusually for one who loves the colorful accessories, I prefer the First Lady's black touches to the Crown Princess' gold/red/nude mix in this Who wore it best? battle.
Our other twin - nay, triplet! - moment from the City Hall event comes from Crown Princess Mary and the gray hat she paired with her Oscar de la Renta coat dress.
Mary's got the lock on sophistication in accessory pairing, but Sophie's version is a welcome shot of color. I'll call this one a tie and I'll take both for myself, outfits and all, thanks very much.
Your turn: Which versions of these twin appearances are your faves?
Photos: via Getty Images as indicated, Net-a-Porter, ITN video
Your turn: Which versions of these twin appearances are your faves?
Photos: via Getty Images as indicated, Net-a-Porter, ITN video