It’s a coma vs. comic books this weekend as two major motion picture releases vie to take the top spot at the box office.

The Chloe Grace-Moretz film If I Stay is the latest young adult property to get the big-screen adaptation treatment, opening just two months after The Fault in Our Stars hit theaters and has since grossed $271 million worldwide. Young adult novels seem to be the latest craze for movie-goers with Twilight and The Hunger Games spawning billion dollar franchises and recent films such as The Giver and Divergent continuing the trend.

Studios have been optioning or purchasing YA titles almost as quickly as the novels are being published. With the kind of grosses the film versions are enjoying, it’s not hard to understand the reason behind this new business model, aimed almost exclusively at teenage girls who are ready to cry in their popcorn and Milk Duds together.

“Hollywood was ahead of the curve with ‘Fault,’” said Paul Dergarabedian, Senior Media Analyst for Rentrak, a company that measures trends in the entertainment industry. “It’s mainly the younger females that are driving this box office renaissance. And this is an audience that was marginalized for years. You can’t ignore how female-centric movies did this year.”

If I Stay is getting a wide release in 2,902 screens this weekend and it’s tracking to earn between $18 and $20 million for the three day total.

If young adult novels are the newest craze at the movies, they still have a long way to go to catch up to the seemingly unstoppable juggernaut of comic book adaptations. This weekend, Sin City: A Dame To Kill For hits 2,894 screens, almost a decade after the previous film was released. The 2005 violent drama, based on the dark crime anthology by legendary comic book writer and artist Frank Miller, grossed $158.7 million dollars globally. The follow-up is R-rated as well and follows a cast of unsavory anti-heroes and villains double-crossing one another with plenty of blood and gore in tow. Jessica Alba, Bruce Willis, and Mickey Rourke are all back for this second go-round with director Robert Rodriguez, whose visual palette mimics the very panels seen in the pages of the original black and white (and red) graphic novels.

Box office tracking has Sin City: A Dame To Kill For coming in with $15 million for the three-day.