Sansa Stark's final scene in Game of Thrones showed the crown she wore as the Queen in the North, which has now been revealed to contain a subtle reference to Robb Stark and his demise at the Red Wedding. The final episode of Game of Thrones ended with the Seven Kingdoms becoming the Six Kingdoms, as the North was allowed to become an independent nation with Sansa Stark as its queen.
The final Sansa scene takes place at her coronation, as she's crowned in the hall of Winterfell in front of her subjects. Sansa's crown depicts two direwolves, with one holding up the other as a symbol of the Stark's unity and how they are as loyal as a pack, which is referenced by the animal on their banner.
The crown wore by Sansa during her final moments in Game of Thrones contains a subtle reference to the outfit worn by Robb Stark during his final moments at the Red Wedding. Michele Clapton was the costume designer on Game of Thrones, and she's co-authored a book called Game of Thrones: The Costumes, which offers a behind-the-scenes look at the creation of the outfits on the show. There have been several excerpts from Game of Thrones: The Costumes released by Vanity Fair, and new details about Sansa's final outfit have been revealed. It turns out that the two direwolves on Sansa's crown are a reference to the clasp worn by Robb Stark during the Red Wedding, which acts as a tribute to Sansa's deceased brother.
In the A Song of Ice and Fire novels, Robb Stark wore a crown made of bronze that had nine iron spikes in the shape of longswords which referenced the crowns worn by the Stark Kings of old. Robb Stark's crown was taken by the Freys after his death, before being claimed by the Brotherhood Without Banners. The creators of Game of Thrones neglected to give Robb Stark a crown, and Jon Snow never wore one during his time as a ruler, which meant that Sansa's crown had to be created especially for her.
If the A Song of Ice and Fire novels end in the same way as the show, then Sansa Stark will become the Queen in the North, though the circumstances will likely be very different. It's possible that she might be able to reclaim the lost crown of her brother and wear it during her own reign, or she might have a new one forged as a symbol of her becoming the first Queen in the North. The crown wore by Sansa in the final episode of Game of Thrones is both a symbol of remembrance for her deceased brother and a subtle warning to her enemies that the North always remembers.
Source: Vanity Fair