To finish what Robb started, Sansa donned a dress made just for her, with each detail symbolizing the journey that got her to where she is today (or, uhh, six hundred or so years ago). Let's start with the sleeves, which were stitched with Weirwood leaves from the magical tree that stands in Winterfell. If you remember, these white-barked trees only grow in the woods of the North, so it's naturally become a symbol of the place Sansa grew up in, and fought so fiercely to protect. Also adorning her sleeves were fish scales, representing House Tully
. Sansa's mother, Catelyn Stark (formerly Tully), was slain during the Red Wedding, so it's no wonder that Sansa would honor her and her house during her coronation.