Cersei Lannister is in the book series A Song of Ice and Fire by George R. R. Martin.
A Dance with Dragons is the fifth of seven planned novels in the epic fantasy series A Song of Ice and Fire by American author George R. R. Martin . A Feast for Crows is the fourth of seven planned novels in the epic fantasy series A Song of Ice and Fire by American author George R. R. Martin . A Storm of Swords is the third of seven planned novels in A Song of Ice and Fire , a fantasy series by American author George R. R. Martin . Cersei Lannister is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin , and its television adaptation Game of Thrones , where she is portrayed by Lena Headey .