MTV.com-Let’s face it, Jessica Alba is known for her sexy factor. No matter what role she’s in, be it a superhero (”Fantastic Four”), a pharmaceutical sales rep (in the upcoming “Little Fockers”) or an immigration officer (this week’s “Machete”), Alba’s addition to any cast turns up its heat.

Such is even the case with Robert Rodriguez’s “Spy Kids 4: All the Time in the World.” When MTV News caught up with the actress and her director at the L.A. premiere of “Machete” earlier this week, we asked them how her casting came to be.

(image source: thesuperficial.com)