Palmistry, also known as chiromancy, is the practice of telling fortunes from the lines, marks, and patterns on the hands, particularly the palms. The palmist claims to be able to read the various lines on your hand. These lines are given names like the life line, the  head line, the heart line, the Saturne line. The life line supposedly indicates physical vitality, the head line intellectual capacity, the heart line emotional nature, etc.

Greta's handprints

Lilliput (a  pocket magazine) from January 1938, featured a report from  Edith Allison Ranger (“How Long Will I Live?”) about palmistry. It included handprints of Albert Einstein, Thomas Mann, Marlene Dietrich, Greta Garbo, Aldous Huxley.

Garbo's Chinese Astrology