Jeff Goldblum, 56, scored himself a new GF -- one who was barely a fetus when "Earth Girls Are Easy" came out.
The girl is 21-year-old Tania Raymonde, who played Ben's daughter on "Lost" ... and probably gets confused for Jeff's daughter whenever they go out.
Goldblum's New Chick
35 Years Younger
8/17/2009 4:30 PM PDT BY TMZ STAFF
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