If you were hoping to see more sexy dancing from Jessica Alba's Nancy Callahan in Frank Miller's Sin City: A Dame To Kill For , well, then you're in luck!

"I had to learn a bunch of dance sequences for it," Alba told Vulture at the Sundance film festival. "I do a lot more dancing in this one."In fact, Alba does so much more dancing that she needed three months just to prepare for it! "It was kind of crazy," said Alba. "It was very, very difficult, and you’ll see why."And just in case you forgot why this is important news that we must report:

The sequel, which is now in production under the direction of Robert Rodriguez, is slated to open October 4, 2013.