How old is Aida?

I was also wondering about her age while watching the movie. I would say around 25: old enough to have a small kid, mature enough to worry about how she is going to provide for herself and the kid, young enough that both young boys and adults fall in love with her.

What AJimenezP said made sense. Not to mention that Claudia Cardinale was 23 when the movie came out.