Gloria Estefan Good Genes or Good Docs?

As a young girl, Gloria Estefan fled Castro's Cuba ... and has barely aged since!

Gloria Estefan
Here's the 34-year-old multiple Grammy winner back in 1992 (left) -- and 17-years-later, the 51-year-old version in Palm Beach on Thursday (right).

Come on, shake your body baby, do the conga!