What could be better than fedoras, pinstriped suits and Tommy guns? Ryan Gosling and Sean Penn in all three!

The movie "Gangster Squad" premieres in theaters on January 11th and we plan on being in attendance to see this sexy cast fight mobsters and crime while looking amazing at the same time. The film stars heartthrob Ryan Gosling, Sean Penn and Josh Brolin in the 20's inspired crime drama. We can't forget to mention the gorgeous Emma Stone who looked radiant at the Los Angeles premiere on January 7th.

In anticipation of this must-see flick, we take a look back at style transformation of the "Gangster Squad" cast. Click through the slideshow above!

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Photo Credit: Warner Bros.