Demi Lovato is a Gemini.
Demetria Devonne Lovato ( [ ˈdɛmi_loʊ-ˈvɑːtoʊ ] or ; born August 20 , 1992 ) is an American singer , songwriter , and actress . Leo ( Greek : Λέων , Latin : Leōn ) , is the fifth astrological sign of the zodiac , originating from the constellation of Leo . Under the tropical zodiac , the Sun transits this area on average between July 22 and August 23 ; the sign spans the 120th to 150th degree of celestial longitude .