lyastark: A GAME OF QUEENS: ↳ Cersei Lannister is the eldest child of Tywin and Joanna Lanniste
lyastark: A GAME OF QUEENS: ↳ Cersei Lannister is the eldest child of Tywin and Joanna Lannister by mere moments, and the twin sister of Jaime Lannister. After Robert’s Rebellion she married the new king, Robert Baratheon, and became Queen of the Seven Kingdoms. -- source link