She is not listed in the AstroDataBank, but apparently her birthtime was given by her mother to a mutual friend of astrologer Margaret Zelinski. This must be regarded as speculative until confirmed however. The chart below is from Astrotheme, a French database of famous birthcharts.
It is unusual to see so many conjunctions in a birthchart, indicating an intense but scattered nature. Note how Neptune is closely entwined with the lights (the Sun and Moon) as well as Venus and Pluto.
Graham