HBO Renews Game of Thrones for Fourth Season

HBO has renewed Game of Thrones for a fourth season, the network announced Tuesday.

Defining Game of Thrones from A to Zorse

The news comes two days after the Season 3 premiere achieved a series high of 4.4 million viewers, up 13 percent from last season's debut. Including the two encore broadcasts Sunday night, viewership hit a total of 6.7 million viewers.Check out the cast weighing in on the best and worst Game of Thrones hair below.