Mervyn LeRoy, the boyish cigar-smoking director who signed her, didn't like her name Julia. So she thought awhile and said, What about Lana? For no reason at all it became Lana - pronounced Lah-nah.
lana
Etymology
() Short form of Alana, or from Russian Лана (Lana), diminutive of several names icluding Светлана (Svetlana).