Simplify the following text for a Grade 9 native English-speaking person.
Original: Demetria Devonne `` Demi '' Lovato ( born August 20 , 1992 ) is an American actress , musician , and singer-songwriter .
Simplified: Demetria Devonne `` Demi '' Lovato ( born August 20 , 1992 in Dallas , Texas ) is an American singer and actress .