An Alba is normally a person that it's incredibly sexy and talented. Often creative people, into arts or music and very brilliant in their studies.
They can be way too emotional, but they'd always be warmhearted and really good friends.
If you ever meet one you should never let her go, because they will cover up your world with love and affection.
Also they are reeeally good at sex.
-"hey are you dating that new Alba?"
-"yeah I'm so happy, hottest and cutest girl i've ever seen"