Demi Devonne [Edit] By Sticky Facts Editorial StaffDemi Devonne biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:Demi Devonne date of birth:August 20, 1992How old is Demi Devonne?33 Tags: birth day 20birth month augustbirth year 1992 Suggested Posts Arnold Schwarzenegger Facts Rihanna Facts Kanye West Facts John Lennon Facts Ed Sheeran Facts Ariana Grande Facts Mark Wahlberg Facts Marilyn Monroe Facts