Comparisons are being made between Kate's Sarah Burton design, and that of another princess: Isabella Orsini, who wed her Belgian beau Prince Edouard de Ligne, two years ago.
Former actress Isabella - who is also the goddaughter of Italian prime minister Silvio Burlusconi - walked down the aisle in a not-too-disimilar gown, which featured the same style lace sleeves and V neckline, as well as a corseted bodice, full skirt and theatrical long train. Both brides also wore long veils with tiaras.
Such is the likeness in the two gowns, that several European papers and magazines have been branding the new Duchess of Cambridge went out to go to church, I thought her dress was a copy of mine," Isabella told Italian magazine Novella 2000.
"It means Kate Middleton has good taste."
While granted, the dresses aren't polar opposites, we reckon Kate's Alexander McQueen design outshines Isabella's gown. We prefer the nipped-in waist, the heavy folds in the skirt and the delicate emboirdery. But that's just our humble opinion.
What do you think? Are the two dresses too similar? Or is there a world of difference? Let us know below!
Passion for fashion? Follow us on Twitter and become our fan on Facebook