The question that's been weighing on us for months has (possibly) been answered! Yvonne Yorke writes in the The Huffington Post that Kate Middleton's gown was designed by Sophie Cranston, the relatively-unknown creator of the Libélula label. Other news outlets seem to be taking this report more seriously than all the other rumors about Kate's dress, though it's unclear why, since Yorke attributes the information to "insider sources."
Though the names of David and Elizabeth Emanuel, who designed Princess Diana's dress, were revealed one month before her wedding, Buckingham Palace has refused to confirm or deny any rumors about the gown. Yorke claims this is to protect 34-year-old Cranston and her family from intense media scrutiny, as this will be a "Jason Wu-moment — when a talented, previously little-known designer is launched and becomes a globally-recognized name."