After two hours of very intensive research we found Jessica Alba's Personality Type!

Jessica Alba's Personality Type is ISFP!

What does this mean?

Jessica Alba has an Introverted Personality Type.(I)

She has a rational personality type, of the emotional kind (hence a Feeler). (F)

This strong Introverted Feeling is coupled with an Extroverted Sensing Personality trait. (S)

This secondary trait is not rational, but irrational, hence Jessica Alba is a Perceiver in dealing with the outside world. (P).