It's a very odd comment from Emilia, and doesn't reflect well on her. There was nothing earth-shatteringly original in Meghan's dress when you look at the individual elements: other brides (even royal brides) have done ¾ length sleeves, portrait or bateau necklines, unornamented gowns, long veils, etc. What made Meghan's unique was the combination of all the elements and the woman herself, that's what created the magic. If Emilia can't see the difference between Meghan's gown and her own creation, then it might explain why she wasn't chosen to create the royal wedding gown in the first place.