Sansa is the second daughter of Eddard "Ned" Stark, the Lord of Winterfell and Warden of the North and Catelyn Tully of Riverrun. She has 4 siblings, Robb, Arya, Bran and Rickon.
Robb looks so much like Sansa, you could mistake them for being twins. They have their mother's thick red-brown hair, blue eyes, and the graceful elegance in the way they move. Robb is muscular though, and takes after his father's stern disposition. He is young but his father taught him well to be devoted to honour and got his mother's loyalty to their duties. Robb likes to practise sword-fighting and archery and impresses anyone who trains him, trains with him and watches him in training.
Sansa is lean and slender, with long hair down to her waist, and always wearing beautiful gowns and dresses. She loves to sing, dance, recite poetry, paint and sew. And does other creative stuff and other feminine activities. She is very much a lady, the way she acts, the way she talks and even the way she laughs. Arya, on the other hand, is the exact opposite of Sansa. Both in physical appearance and personality. She looks so much like their father, with brown hair, grey eyes and a long face. She wants to learn how to use a sword and ride horses instead of doing the activities her sister does. She thinks it's unfair that she has to do those things just because she's a girl.
Bran, like his two eldest siblings takes after the Tullys, with the colour of his hair and eyes. He is very tough and spirited and enjoys climbing the walls of Winterfell which worries his mother a lot. Rickon, the youngest, also looks like their mother, in colouring. Although he is still quite pudgy and a little bit cheeky.
The siblings are very close although they do have their quarrels, mostly between Sansa and Arya. But they do care for each other. And all try their best to fulfill their duties and enjoy their youth as much as they could do both things
One beautiful summer day in Winterfell, Sansa just finished her latest sewing project and showed it to her Septa, "Good work, Sansa, as always. Your needlework is remarkable, your mother would be so proud." That made Sansa smile, she took pride in accomplishing things like this, art and music are her passion and it gives her joy to know that she does well at both. "Thank you. It didn't take me that long to finish it, I think I'm developing my sewing speed as well as the quality." Sansa then nods politely and leaves the room.
"Sansa!" she hears someone calling unto her as she was walking on the way to her quarters. She turns around to see her brother Robb walking towards her "I have great news!" he then adds as he gets closer to her.
"What is it?" Sansa asks him excitedly.
He catches up with her and they walk side by side "Aunty Lyanna and Jon are coming to visit! And they are spending a few weeks with us! Not like last time where they only stayed very shortly." he finally tells her. Sansa's face lightens up "Oh, that's wonderful news, Robb! I'm so excited to see them. And hear Aunt Lyanna's stories about Dragonstone and King's Landing and just everything about the South. I always look forward to hearing those." She have always loved the South, of course the North will always have a place in her heart being that it is her home, but she has the South in her, from her mother, even though she's never been there. She loves hearing the stories of knights, and ladies, of the dancing, and how they do their hair and the kind of gowns they were as she sees from her aunt and imagines from her stories, and maybe a faint memory of how her mother was a long time ago.
He smiles at his sister's enthusiasm, "Yeah. I'm more looking forward to playing sword-fights with Jon though." Robb, as fascinated by the idea of the South as he is, loves Winterfell and is very happy where he is. He wishes though that he had a brother closer to his age and enjoys the things he enjoys just like his cousin Jon, who is only younger than him by a few months.