'Machete Kills' - the upcoming sequel to 2010's grindhouse-style action film 'Machete' - is currently filming in Austin, TX and Jessica Alba was there, reprising her role as U.S. Immigrations Agent Sartana Rivera. Alba was only on set for a few days but managed to post a first look at the film on her Facebook page.

Alba stars in 'Machete Kills' with Danny Trejo (who returns as Machete), Mel Gibson, Michelle Rodriguez, Damien Bachir, Sofia Vergara, Zoe Saldana, Amber Heard and, yes, Charlie Sheen as the President of the United States.

That's an impressive cast for a sequel to a film that didn't even do very well, but it'll be interesting to see what writer/director Robert Rodriguez does for an encore. The official plot synopsis is as follows:

"The second film in the Machete trilogy finds Machete mourning the loss of his beloved Sartana, slain during a run in with the cartels. Machete is recruited by the President of the United States for a mission which would be impossible for any mortal man. Machete must battle his way through Mexico to take down a cartel leader, Mendez the Madman, who threatens to fire a missile on the US. Machete foils Mendez's plot only to find that the missiles are remote wired to and triggered by the madman’s still beating heart. The only man who can disarm the missile is eccentric billionaire arms dealer, Luther Voz, who has hatched a plan of his own to spread war across the planet with a weapon in space. Machete takes on Voz and his army in order dismantle his master plan for global anarchy."

Below are the photos posted by Alba to her Facebook page. Just a few days after uploading the 'Machete Kills' photos, she already posted that she's leaving Austin and headed back home, so it's possible her role in the film is a smaller one.

No word yet on when 'Machete Kills' will hit theaters.