Just shortley after giving birth to her baby girl Honor, Jessica Alba is coming back to the workplace, to act as a math mastermind in a new film. Three months after she received her 1st baby with hubby Cash Warren, Alba has contracted to star in 'Invisible'. She will act as "a young lady who's backed out from the human race and is devoured by numbers and mathematics," reports Daily Variety. Alba acquired the character role subsequently when 'Ugly Betty' dedications pushed America Ferrera to get out. The 27-year-old is likewise developing to repeat her character in a continuation to 2005 film 'Sin City'.