Well, to make a long story short, Jennifer Grey is Jewish!
Since Jennifer Grey's mother is Jewish, and in Orthodox Judaism and Conservative Judaism, those with a Jewish mother (or those who underwent a halakhic conversion) are considered Jewish, then that makes her Jewish. Her father is Jewish too.
Jennifer Grey was born on March 26, 1960 in Manhattan, New York City.
She is known for her roles in the 1980s films Ferris Bueller's Day Off (1986) and Dirty Dancing (1987), for which Grey earned a Golden Globe Award nomination. She is also known for her 2010 victory in season eleven of Dancing with the Stars.
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