Claim: Marilyn Monroe was a Gemini.

Gemini -LRB- pronunciation : -LSB- ˈdʒɛmɪnaɪ -RSB- or -LSB- ˈdʒɛmɪniː -RSB- or -RRB- is the third astrological sign in the zodiac , originating from the constellation of Gemini . Under the tropical zodiac , the sun transits this sign between May 21 and June 21 . Gemini is represented by The Twins Castor and Pollux . The symbol of the twins is based on the Dioscuri , two mortals that were granted shared godhood after death .